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Protein

HLA class II histocompatibility antigen, DRB1-1 beta chain

Gene

HLA-DRB1

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Binds peptides derived from antigens that access the endocytic route of antigen presenting cells (APC) and presents them on the cell surface for recognition by the CD4 T-cells. The peptide binding cleft accommodates peptides of 10-30 residues. The peptides presented by MHC class II molecules are generated mostly by degradation of proteins that access the endocytic route; where they are processed by lysosomal proteases and other hydrolases. Exogenous antigens that have been endocytosed by the APC are thus readily available for presentation via MHC II molecules; and for this reason this antigen presentation pathway is usually referred to as exogenous. As membrane proteins on their way to degradation in lysosomes as part of their normal turn-over are also contained in the endosomal/lysosomal compartments; exogenous antigens must compete with those derived from endogenous components. Autophagy is also a source of endogenous peptides; autophagosomes constitutively fuse with MHC class II loading compartments. In addition to APCs; other cells of the gastrointestinal tract; such as epithelial cells; express MHC class II molecules and CD74 and act as APCs; which is an unusual trait of the GI tract. To produce a MHC class II molecule that presents an antigen; three MHC class II molecules (heterodimers of an alpha and a beta chain) associate with a CD74 trimer in the ER to form a heterononamer. Soon after the entry of this complex into the endosomal/lysosomal system where antigen processing occurs; CD74 undergoes a sequential degradation by various proteases; including CTSS and CTSL; leaving a small fragment termed CLIP (class-II-associated invariant chain peptide). The removal of CLIP is facilitated by HLA-DM via direct binding to the alpha-beta-CLIP complex so that CLIP is released. HLA-DM stabilizes MHC class II molecules until primary high affinity antigenic peptides are bound. The MHC II molecule bound to a peptide is then transported to the cell membrane surface. In B-cells; the interaction between HLA-DM and MHC class II molecules is regulated by HLA-DO. Primary dendritic cells (DCs) also to express HLA-DO. Lysosomal microenvironment has been implicated in the regulation of antigen loading into MHC II molecules; increased acidification produces increased proteolysis and efficient peptide loading.
(Microbial infection) Acts as a receptor for Epstein-Barr virus on lymphocytes.2 Publications

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

  • MHC class II protein complex binding Source: UniProtKB
  • peptide antigen binding Source: UniProtKB
  • virus receptor activity Source: UniProtKB-KW

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionHost cell receptor for virus entry, Receptor
Biological processHost-virus interaction, Immunity

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-HSA-202424 Downstream TCR signaling
R-HSA-202427 Phosphorylation of CD3 and TCR zeta chains
R-HSA-202430 Translocation of ZAP-70 to Immunological synapse
R-HSA-202433 Generation of second messenger molecules
R-HSA-2132295 MHC class II antigen presentation
R-HSA-389948 PD-1 signaling
R-HSA-877300 Interferon gamma signaling

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
HLA class II histocompatibility antigen, DRB1-1 beta chain
Alternative name(s):
MHC class II antigen DRB1*1
Short name:
DR-1
Short name:
DR1
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiHomo sapiens (Human)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri9606 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000005640 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 6

Organism-specific databases

Eukaryotic Pathogen Database Resources

More...
EuPathDBi
HostDB:ENSG00000196126.10

Human Gene Nomenclature Database

More...
HGNCi
HGNC:4948 HLA-DRB1

Online Mendelian Inheritance in Man (OMIM)

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MIMi
142857 gene

neXtProt; the human protein knowledge platform

More...
neXtProti
NX_P04229

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini30 – 227ExtracellularSequence analysisAdd BLAST198
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei228 – 250HelicalSequence analysisAdd BLAST23
Topological domaini251 – 266CytoplasmicSequence analysisAdd BLAST16

Keywords - Cellular componenti

Cell membrane, Endoplasmic reticulum, Endosome, Golgi apparatus, Lysosome, Membrane, MHC II

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the ‘Pathology and Biotech’ section provides information on the disease(s) associated with genetic variations in a given protein. The information is extracted from the scientific literature and diseases that are also described in the <a href="http://www.ncbi.nlm.nih.gov/sites/entrez?db=omim">OMIM</a> database are represented with a <a href="http://www.uniprot.org/diseases">controlled vocabulary</a> in the following way:<p><a href='/help/involvement_in_disease' target='_top'>More...</a></p>Involvement in diseasei

Sarcoidosis 1 (SS1)
Disease susceptibility is associated with variations affecting the gene represented in this entry.
Disease descriptionAn idiopathic, systemic, inflammatory disease characterized by the formation of immune granulomas in involved organs. Granulomas predominantly invade the lungs and the lymphatic system, but also skin, liver, spleen, eyes and other organs may be involved.
See also OMIM:181000

Organism-specific databases

DisGeNET

More...
DisGeNETi
3123

MalaCards human disease database

More...
MalaCardsi
HLA-DRB1
MIMi181000 phenotype

Orphanet; a database dedicated to information on rare diseases and orphan drugs

More...
Orphaneti
703 Bullous pemphigoid
220393 Diffuse cutaneous systemic sclerosis
545 Follicular lymphoma
163908 Limbic encephalitis with LGI1 antibodies
220402 Limited cutaneous systemic sclerosis
220407 Limited systemic sclerosis
2073 Narcolepsy type 1
83465 Narcolepsy type 2
555 NON RARE IN EUROPE: Celiac disease
243377 NON RARE IN EUROPE: Diabetes mellitus type 1
802 NON RARE IN EUROPE: Multiple sclerosis
284130 NON RARE IN EUROPE: Rheumatoid arthritis
477738 Pediatric multiple sclerosis
797 Sarcoidosis
536 Systemic lupus erythematosus
85414 Systemic-onset juvenile idiopathic arthritis

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL1943

Drug and drug target database

More...
DrugBanki
DB05259 Glatiramer Acetate

Polymorphism and mutation databases

BioMuta curated single-nucleotide variation and disease association database

More...
BioMutai
HLA-DRB1

Domain mapping of disease mutations (DMDM)

More...
DMDMi
34395916

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 291 PublicationAdd BLAST29
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000001894930 – 266HLA class II histocompatibility antigen, DRB1-1 beta chainAdd BLAST237

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi44 ↔ 108PROSITE-ProRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi48N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi146 ↔ 202PROSITE-ProRule annotation

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Ubiquitinated by MARCH1 and MARCH8 at Lys-254 leading to sorting into the endosome system and down-regulation of MHC class II.1 Publication

Keywords - PTMi

Disulfide bond, Glycoprotein, Ubl conjugation

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
P04229

PeptideAtlas

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PeptideAtlasi
P04229

PRoteomics IDEntifications database

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PRIDEi
P04229

PTM databases

GlyConnect protein glycosylation platform

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GlyConnecti
1373

iPTMnet integrated resource for PTMs in systems biology context

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iPTMneti
P04229

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

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PhosphoSitePlusi
P04229

SwissPalm database of S-palmitoylation events

More...
SwissPalmi
P04229

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

Gene expression databases

Bgee dataBase for Gene Expression Evolution

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Bgeei
ENSG00000196126 Expressed in 94 organ(s), highest expression level in spleen

CleanEx database of gene expression profiles

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CleanExi
HS_HLA-DRB1

ExpressionAtlas, Differential and Baseline Expression

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ExpressionAtlasi
P04229 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

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Genevisiblei
P04229 HS

Organism-specific databases

Human Protein Atlas

More...
HPAi
CAB015400
CAB034021
HPA043151

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Heterodimer of an alpha and a beta subunit; also referred as MHC class II molecule. In the endoplasmic reticulum (ER) it forms a heterononamer; 3 MHC class II molecules bind to a CD74 homotrimer (also known as invariant chain or HLA class II histocompatibility antigen gamma chain). In the endosomal/lysosomal system; CD74 undergoes sequential degradation by various proteases; leaving a small fragment termed CLIP on each MHC class II molecule. MHC class II molecule interacts with HLA_DM, and HLA_DO in B-cells, in order to release CLIP and facilitate the binding of antigenic peptides.
(Microbial infection) Interacts with Epstein-Barr virus gp42 protein (PubMed:11864610, PubMed:9151859).2 Publications

Protein-protein interaction databases

Database of interacting proteins

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DIPi
DIP-6143N

Protein interaction database and analysis system

More...
IntActi
P04229, 7 interactors

Molecular INTeraction database

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MINTi
P04229

Chemistry databases

BindingDB database of measured binding affinities

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BindingDBi
P04229

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1266
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Select the link destinations:

Protein Data Bank Europe

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PDBei

Protein Data Bank RCSB

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RCSB PDBi

Protein Data Bank Japan

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PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1AQDX-ray2.45B/E/H/K30-227[»]
1DLHX-ray2.80B/E32-219[»]
1FYTX-ray2.60B30-221[»]
1HXYX-ray2.60B30-219[»]
1JWMX-ray2.70B30-219[»]
1JWSX-ray2.60B30-219[»]
1JWUX-ray2.30B30-219[»]
1KG0X-ray2.65B32-219[»]
1KLGX-ray2.40B30-219[»]
1KLUX-ray1.93B30-219[»]
1LO5X-ray3.20B30-219[»]
1PYWX-ray2.10B30-219[»]
1R5IX-ray2.60B/F30-219[»]
1SEBX-ray2.70B/F30-221[»]
1SJEX-ray2.45B30-219[»]
1SJHX-ray2.25B30-219[»]
1T5WX-ray2.40B/E30-219[»]
1T5XX-ray2.50B30-219[»]
2FSEX-ray3.10B/D33-219[»]
2G9HX-ray2.00B30-219[»]
2IAMX-ray2.80B30-219[»]
2IANX-ray2.80B/G/L/Q30-219[»]
2ICWX-ray2.41B/E30-219[»]
2IPKX-ray2.30B30-219[»]
2OJEX-ray3.00B/F30-219[»]
2XN9X-ray2.30E30-219[»]
3L6FX-ray2.10B30-221[»]
3PDOX-ray1.95B30-227[»]
3PGCX-ray2.66B/E30-227[»]
3PGDX-ray2.72B/E30-227[»]
3QXAX-ray2.71B/E30-219[»]
3QXDX-ray2.30B/E30-219[»]
3S4SX-ray2.40B/E30-221[»]
3S5LX-ray2.10B/E30-221[»]
4AENX-ray2.20B30-227[»]
4AH2X-ray2.36B30-227[»]
4C56X-ray2.90E/K30-219[»]
4E41X-ray2.60B/G30-219[»]
4FQXX-ray2.60B30-221[»]
4GBXX-ray3.00B30-220[»]
4I5BX-ray2.12B/E31-222[»]
4OV5X-ray2.20B/E/H/K/N/Q30-219[»]
4X5WX-ray1.34B30-227[»]
4X5XX-ray3.20B/D30-227[»]
6CQJX-ray2.75B/E/H31-219[»]
6CQRX-ray3.04B/G30-219[»]

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

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ProteinModelPortali
P04229

SWISS-MODEL Repository - a database of annotated 3D protein structure models

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SMRi
P04229

Database of comparative protein structure models

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ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

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MobiDBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P04229

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini126 – 214Ig-like C1-typeAdd BLAST89

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni30 – 124Beta-1Add BLAST95
Regioni125 – 227Beta-2Add BLAST103

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the MHC class II family.Curated

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

The HOVERGEN Database of Homologous Vertebrate Genes

More...
HOVERGENi
HBG012730

Database of Orthologous Groups

More...
OrthoDBi
80538at2759

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

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Gene3Di
2.60.40.10, 1 hit
3.10.320.10, 1 hit

Integrated resource of protein families, domains and functional sites

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InterProi
View protein in InterPro
IPR007110 Ig-like_dom
IPR036179 Ig-like_dom_sf
IPR013783 Ig-like_fold
IPR003006 Ig/MHC_CS
IPR003597 Ig_C1-set
IPR011162 MHC_I/II-like_Ag-recog
IPR014745 MHC_II_a/b_N
IPR000353 MHC_II_b_N

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF07654 C1-set, 1 hit
PF00969 MHC_II_beta, 1 hit

ProDom; a protein domain database

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ProDomi
View protein in ProDom or Entries sharing at least one domain
PD000328 MHC_II_b_N, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

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SMARTi
View protein in SMART
SM00407 IGc1, 1 hit
SM00921 MHC_II_beta, 1 hit

Superfamily database of structural and functional annotation

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SUPFAMi
SSF48726 SSF48726, 1 hit
SSF54452 SSF54452, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50835 IG_LIKE, 1 hit
PS00290 IG_MHC, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>.<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequence (1+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

This entry has 1 described isoform and 13 potential isoforms that are computationally mapped.Show allAlign All

P04229-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MVCLKLPGGS CMTALTVTLM VLSSPLALAG DTRPRFLWQL KFECHFFNGT
60 70 80 90 100
ERVRLLERCI YNQEESVRFD SDVGEYRAVT ELGRPDAEYW NSQKDLLEQR
110 120 130 140 150
RAAVDTYCRH NYGVGESFTV QRRVEPKVTV YPSKTQPLQH HNLLVCSVSG
160 170 180 190 200
FYPGSIEVRW FRNGQEEKAG VVSTGLIQNG DWTFQTLVML ETVPRSGEVY
210 220 230 240 250
TCQVEHPSVT SPLTVEWRAR SESAQSKMLS GVGGFVLGLL FLGAGLFIYF
260
RNQKGHSGLQ PTGFLS
Length:266
Mass (Da):29,914
Last modified:August 29, 2003 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iCC9CC7E2D0DD036C
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There are 13 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
P137602B14_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
Q9GIY32B1E_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
P137612B17_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
Q5Y7A72B1D_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
P019112B1F_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1 HLA-DRB2
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
P019122B13_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
Q299742B1G_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
Q9TQE02B19_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
Q95IE32B1C_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
P200392B1B_HUMAN
HLA class II histocompatibility ant...
HLA-DRB1
266Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
There are more potential isoformsShow all

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti25P → R in AAA59781 (PubMed:3858829).Curated1
Sequence conflicti36F → S AA sequence (PubMed:6600932).Curated1
Sequence conflicti58 – 59RC → LF AA sequence (PubMed:6600932).Curated2
Sequence conflicti80T → E in AAA59781 (PubMed:3858829).Curated1
Sequence conflicti100 – 103RRAA → KRGQ in AAA59781 (PubMed:3858829).Curated4
Sequence conflicti192T → I in AAA59781 (PubMed:3858829).Curated1

<p>This subsection of the ‘Sequence’ section provides information on polymorphic variants. If the variant is associated with a disease state, the description of the latter can be found in the <a href="http://www.uniprot.org/manual/involvement_in_disease">'Involvement in disease'</a> subsection.<p><a href='/help/polymorphism' target='_top'>More...</a></p>Polymorphismi

The following alleles of DRB1-1 are known: DRB1*01:01; DRB1*01:02; DRB1*01:03; DRB1*01:04; DRB1*01:05; DRB1*01:06; DRB1*01:07; DRB1*01:08; DRB1*01:09; DRB1*01:10; DRB1*01:11; DRB1*01:12; DRB1*01:13; DRB1*01:14; DRB1*01:15; DRB1*01:16; DRB1*01:17; DRB1*01:18; DRB1*01:19; DRB1*01:20 and DRB1*01:21. The sequence shown is that of DRB1*01:01.

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural variantiVAR_0565275K → R. Corresponds to variant dbSNP:rs707953Ensembl.1
Natural variantiVAR_03337829A → S. Corresponds to variant dbSNP:rs9270299Ensembl.1
Natural variantiVAR_03338033R → Q. Corresponds to variant dbSNP:rs1141741Ensembl.1
Natural variantiVAR_01674039Q → E in allele DRB1*01:07. 1
Natural variantiVAR_03338166S → Y. Corresponds to variant dbSNP:rs16822820Ensembl.1
Natural variantiVAR_01674174G → R in allele DRB1*01:05. 1
Natural variantiVAR_03338389Y → S. Corresponds to variant dbSNP:rs1059586Ensembl.1
Natural variantiVAR_01671096L → I in allele DRB1*01:03. 1
Natural variantiVAR_01671199Q → D in allele DRB1*01:03; requires 2 nucleotide substitutions. 1
Natural variantiVAR_03338499Q → E. Corresponds to variant dbSNP:rs17881965Ensembl.1
Natural variantiVAR_03338599Q → H. Corresponds to variant dbSNP:rs17879599Ensembl.1
Natural variantiVAR_016742100R → A in allele DRB1*01:06; requires 2 nucleotide substitutions. 1
Natural variantiVAR_016712100R → E in allele DRB1*01:03; requires 2 nucleotide substitutions. 1
Natural variantiVAR_033386102A → G. Corresponds to variant dbSNP:rs17878857Ensembl.1
Natural variantiVAR_033387103A → E. Corresponds to variant dbSNP:rs16822805Ensembl.1
Natural variantiVAR_016713106T → N in allele DRB1*01:04. 1
Natural variantiVAR_033388107Y → H. Corresponds to variant dbSNP:rs16822512Ensembl.1
Natural variantiVAR_016714114V → A in allele DRB1*01:02. Corresponds to variant dbSNP:rs17424145Ensembl.1
Natural variantiVAR_016715115G → V in allele DRB1*01:02, allele DRB1*01:04 and allele DRB1*01:06. 1
Natural variantiVAR_033389164G → D. Corresponds to variant dbSNP:rs1059633Ensembl.1
Natural variantiVAR_033391171V → M. Corresponds to variant dbSNP:rs701829Ensembl.1
Natural variantiVAR_033393195R → Q. Corresponds to variant dbSNP:rs3205588Ensembl.1
Natural variantiVAR_016716253Q → E in allele DRB1*01:02. 1
Natural variantiVAR_056528262T → R1 PublicationCorresponds to variant dbSNP:rs9269744Ensembl.1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
X03069 mRNA Translation: CAA26873.1
M11161 mRNA Translation: AAA59781.1
M33600 mRNA Translation: AAA59782.1
AY663400 Genomic DNA Translation: AAU87993.1
AM419948 Genomic DNA Translation: CAL99240.1
AK289463 mRNA Translation: BAF82152.1
X64547 Genomic DNA Translation: CAA45845.1
X99896 mRNA Translation: CAA68171.1
AF089723 Genomic DNA Translation: AAD51131.1
AJ276206 Genomic DNA Translation: CAC27123.1
AB015184 Genomic DNA Translation: BAA28761.1
AJ303118 Genomic DNA Translation: CAC19693.1
Z50871 Genomic DNA No translation available.
M21008 mRNA Translation: AAA59780.1
AF029288 Genomic DNA Translation: AAF65497.1
AF029293 Genomic DNA Translation: AAF65502.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A19197
D24669 HLHU1B
I56072
PH0147

UniGene gene-oriented nucleotide sequence clusters

More...
UniGenei
Hs.534322
Hs.696211
Hs.736560

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENST00000360004; ENSP00000353099; ENSG00000196126

Keywords - Coding sequence diversityi

Polymorphism

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X03069 mRNA Translation: CAA26873.1
M11161 mRNA Translation: AAA59781.1
M33600 mRNA Translation: AAA59782.1
AY663400 Genomic DNA Translation: AAU87993.1
AM419948 Genomic DNA Translation: CAL99240.1
AK289463 mRNA Translation: BAF82152.1
X64547 Genomic DNA Translation: CAA45845.1
X99896 mRNA Translation: CAA68171.1
AF089723 Genomic DNA Translation: AAD51131.1
AJ276206 Genomic DNA Translation: CAC27123.1
AB015184 Genomic DNA Translation: BAA28761.1
AJ303118 Genomic DNA Translation: CAC19693.1
Z50871 Genomic DNA No translation available.
M21008 mRNA Translation: AAA59780.1
AF029288 Genomic DNA Translation: AAF65497.1
AF029293 Genomic DNA Translation: AAF65502.1
PIRiA19197
D24669 HLHU1B
I56072
PH0147
UniGeneiHs.534322
Hs.696211
Hs.736560

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1AQDX-ray2.45B/E/H/K30-227[»]
1DLHX-ray2.80B/E32-219[»]
1FYTX-ray2.60B30-221[»]
1HXYX-ray2.60B30-219[»]
1JWMX-ray2.70B30-219[»]
1JWSX-ray2.60B30-219[»]
1JWUX-ray2.30B30-219[»]
1KG0X-ray2.65B32-219[»]
1KLGX-ray2.40B30-219[»]
1KLUX-ray1.93B30-219[»]
1LO5X-ray3.20B30-219[»]
1PYWX-ray2.10B30-219[»]
1R5IX-ray2.60B/F30-219[»]
1SEBX-ray2.70B/F30-221[»]
1SJEX-ray2.45B30-219[»]
1SJHX-ray2.25B30-219[»]
1T5WX-ray2.40B/E30-219[»]
1T5XX-ray2.50B30-219[»]
2FSEX-ray3.10B/D33-219[»]
2G9HX-ray2.00B30-219[»]
2IAMX-ray2.80B30-219[»]
2IANX-ray2.80B/G/L/Q30-219[»]
2ICWX-ray2.41B/E30-219[»]
2IPKX-ray2.30B30-219[»]
2OJEX-ray3.00B/F30-219[»]
2XN9X-ray2.30E30-219[»]
3L6FX-ray2.10B30-221[»]
3PDOX-ray1.95B30-227[»]
3PGCX-ray2.66B/E30-227[»]
3PGDX-ray2.72B/E30-227[»]
3QXAX-ray2.71B/E30-219[»]
3QXDX-ray2.30B/E30-219[»]
3S4SX-ray2.40B/E30-221[»]
3S5LX-ray2.10B/E30-221[»]
4AENX-ray2.20B30-227[»]
4AH2X-ray2.36B30-227[»]
4C56X-ray2.90E/K30-219[»]
4E41X-ray2.60B/G30-219[»]
4FQXX-ray2.60B30-221[»]
4GBXX-ray3.00B30-220[»]
4I5BX-ray2.12B/E31-222[»]
4OV5X-ray2.20B/E/H/K/N/Q30-219[»]
4X5WX-ray1.34B30-227[»]
4X5XX-ray3.20B/D30-227[»]
6CQJX-ray2.75B/E/H31-219[»]
6CQRX-ray3.04B/G30-219[»]
ProteinModelPortaliP04229
SMRiP04229
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

DIPiDIP-6143N
IntActiP04229, 7 interactors
MINTiP04229

Chemistry databases

BindingDBiP04229
ChEMBLiCHEMBL1943
DrugBankiDB05259 Glatiramer Acetate

PTM databases

GlyConnecti1373
iPTMnetiP04229
PhosphoSitePlusiP04229
SwissPalmiP04229

Polymorphism and mutation databases

BioMutaiHLA-DRB1
DMDMi34395916

Proteomic databases

jPOSTiP04229
PeptideAtlasiP04229
PRIDEiP04229

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000360004; ENSP00000353099; ENSG00000196126

Organism-specific databases

DisGeNETi3123
EuPathDBiHostDB:ENSG00000196126.10

GeneCards: human genes, protein and diseases

More...
GeneCardsi
HLA-DRB1
HGNCiHGNC:4948 HLA-DRB1
HPAiCAB015400
CAB034021
HPA043151
MalaCardsiHLA-DRB1
MIMi142857 gene
181000 phenotype
neXtProtiNX_P04229
Orphaneti703 Bullous pemphigoid
220393 Diffuse cutaneous systemic sclerosis
545 Follicular lymphoma
163908 Limbic encephalitis with LGI1 antibodies
220402 Limited cutaneous systemic sclerosis
220407 Limited systemic sclerosis
2073 Narcolepsy type 1
83465 Narcolepsy type 2
555 NON RARE IN EUROPE: Celiac disease
243377 NON RARE IN EUROPE: Diabetes mellitus type 1
802 NON RARE IN EUROPE: Multiple sclerosis
284130 NON RARE IN EUROPE: Rheumatoid arthritis
477738 Pediatric multiple sclerosis
797 Sarcoidosis
536 Systemic lupus erythematosus
85414 Systemic-onset juvenile idiopathic arthritis

GenAtlas: human gene database

More...
GenAtlasi
Search...

Phylogenomic databases

HOVERGENiHBG012730
OrthoDBi80538at2759

Enzyme and pathway databases

ReactomeiR-HSA-202424 Downstream TCR signaling
R-HSA-202427 Phosphorylation of CD3 and TCR zeta chains
R-HSA-202430 Translocation of ZAP-70 to Immunological synapse
R-HSA-202433 Generation of second messenger molecules
R-HSA-2132295 MHC class II antigen presentation
R-HSA-389948 PD-1 signaling
R-HSA-877300 Interferon gamma signaling

Miscellaneous databases

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

More...
ChiTaRSi
HLA-DRB1 human
EvolutionaryTraceiP04229

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSG00000196126 Expressed in 94 organ(s), highest expression level in spleen
CleanExiHS_HLA-DRB1
ExpressionAtlasiP04229 baseline and differential
GenevisibleiP04229 HS

Family and domain databases

Gene3Di2.60.40.10, 1 hit
3.10.320.10, 1 hit
InterProiView protein in InterPro
IPR007110 Ig-like_dom
IPR036179 Ig-like_dom_sf
IPR013783 Ig-like_fold
IPR003006 Ig/MHC_CS
IPR003597 Ig_C1-set
IPR011162 MHC_I/II-like_Ag-recog
IPR014745 MHC_II_a/b_N
IPR000353 MHC_II_b_N
PfamiView protein in Pfam
PF07654 C1-set, 1 hit
PF00969 MHC_II_beta, 1 hit
ProDomiView protein in ProDom or Entries sharing at least one domain
PD000328 MHC_II_b_N, 1 hit
SMARTiView protein in SMART
SM00407 IGc1, 1 hit
SM00921 MHC_II_beta, 1 hit
SUPFAMiSSF48726 SSF48726, 1 hit
SSF54452 SSF54452, 1 hit
PROSITEiView protein in PROSITE
PS50835 IG_LIKE, 1 hit
PS00290 IG_MHC, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry namei2B11_HUMAN
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P04229
Secondary accession number(s): A4F5N0
, A8K098, O62869, P13758, Q06662, Q30116, Q30117, Q5Y7E9, Q7M2H4, Q95461, Q9BCL7, Q9GIK5, Q9MXZ0, Q9MXZ5, Q9TQ91
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: March 20, 1987
Last sequence update: August 29, 2003
Last modified: January 16, 2019
This is version 183 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  4. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  5. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  6. Human chromosome 6
    Human chromosome 6: entries, gene names and cross-references to MIM
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