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Protein

HLA class I histocompatibility antigen, B-18 alpha chain

Gene

HLA-B

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Involved in the presentation of foreign antigens to the immune system.

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Host-virus interaction, Immunity

Enzyme and pathway databases

ReactomeiREACT_111168. Endosomal/Vacuolar pathway.
REACT_111178. ER-Phagosome pathway.
REACT_11152. Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell.
REACT_25078. Interferon gamma signaling.
REACT_25162. Interferon alpha/beta signaling.
REACT_75795. Antigen Presentation: Folding, assembly and peptide loading of class I MHC.

Names & Taxonomyi

Protein namesi
Recommended name:
HLA class I histocompatibility antigen, B-18 alpha chain
Alternative name(s):
MHC class I antigen B*18
Gene namesi
Name:HLA-B
Synonyms:HLAB
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
ProteomesiUP000005640 Componenti: Chromosome 6

Organism-specific databases

HGNCiHGNC:4932. HLA-B.

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini25 – 309285ExtracellularSequence AnalysisAdd
BLAST
Transmembranei310 – 33324HelicalSequence AnalysisAdd
BLAST
Topological domaini334 – 36229CytoplasmicSequence AnalysisAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, MHC I

Pathology & Biotechi

Polymorphism and mutation databases

DMDMi231388.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Signal peptidei1 – 2424Add
BLAST
Chaini25 – 362338HLA class I histocompatibility antigen, B-18 alpha chainPRO_0000018838Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Glycosylationi110 – 1101N-linked (GlcNAc...)By similarity
Disulfide bondi125 ↔ 188PROSITE-ProRule annotation
Disulfide bondi227 ↔ 283PROSITE-ProRule annotation

Post-translational modificationi

Polyubiquitinated in a post ER compartment by interaction with human herpesvirus 8 MIR1 protein. This targets the protein for rapid degradation via the ubiquitin system (By similarity).By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein, Ubl conjugation

Proteomic databases

MaxQBiP30466.
PaxDbiP30466.
PRIDEiP30466.

Expressioni

Gene expression databases

CleanExiHS_HLA-B.

Interactioni

Subunit structurei

Heterodimer of an alpha chain and a beta chain (beta-2-microglobulin). Interacts with human herpesvirus 8 MIR1 protein (By similarity).By similarity

Protein-protein interaction databases

BioGridi109351. 60 interactions.

Structurei

Secondary structure

1
362
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Beta strandi27 – 3610Combined sources
Beta strandi45 – 528Combined sources
Beta strandi55 – 617Combined sources
Beta strandi64 – 663Combined sources
Helixi74 – 763Combined sources
Helixi81 – 10828Combined sources
Beta strandi118 – 12710Combined sources
Beta strandi133 – 14210Combined sources
Beta strandi145 – 1506Combined sources
Beta strandi157 – 1615Combined sources
Helixi162 – 17312Combined sources
Helixi176 – 18510Combined sources
Helixi187 – 19812Combined sources
Helixi200 – 2034Combined sources
Beta strandi210 – 23526Combined sources
Beta strandi238 – 2436Combined sources
Turni249 – 2513Combined sources
Beta strandi261 – 2633Combined sources
Beta strandi265 – 27410Combined sources
Helixi278 – 2803Combined sources
Beta strandi281 – 2866Combined sources
Beta strandi290 – 2923Combined sources
Beta strandi294 – 2963Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
4JQVX-ray1.50A25-302[»]
4XXCX-ray1.43A25-303[»]
ProteinModelPortaliP30466.
SMRiP30466. Positions 25-300.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini209 – 29587Ig-like C1-typeAdd
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni25 – 11490Alpha-1Add
BLAST
Regioni115 – 20692Alpha-2Add
BLAST
Regioni207 – 29892Alpha-3Add
BLAST
Regioni299 – 30911Connecting peptideAdd
BLAST

Sequence similaritiesi

Belongs to the MHC class I family.Curated

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiNOG42056.
HOVERGENiHBG016709.
OMAiRDLRSWI.
PhylomeDBiP30466.

Family and domain databases

Gene3Di2.60.40.10. 1 hit.
3.30.500.10. 1 hit.
InterProiIPR007110. Ig-like_dom.
IPR013783. Ig-like_fold.
IPR003006. Ig/MHC_CS.
IPR003597. Ig_C1-set.
IPR011161. MHC_I-like_Ag-recog.
IPR011162. MHC_I/II-like_Ag-recog.
IPR027648. MHC_I_a.
IPR001039. MHC_I_a_a1/a2.
IPR010579. MHC_I_a_C.
[Graphical view]
PfamiPF07654. C1-set. 1 hit.
PF00129. MHC_I. 1 hit.
PF06623. MHC_I_C. 1 hit.
[Graphical view]
PRINTSiPR01638. MHCCLASSI.
SMARTiSM00407. IGc1. 1 hit.
[Graphical view]
SUPFAMiSSF54452. SSF54452. 1 hit.
PROSITEiPS50835. IG_LIKE. 1 hit.
PS00290. IG_MHC. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P30466-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRVTAPRTLL LLLWGAVALT ETWAGSHSMR YFHTSVSRPG RGEPRFISVG
60 70 80 90 100
YVDGTQFVRF DSDAASPRTE PRAPWIEQEG PEYWDRNTQI SKTNTQTYRE
110 120 130 140 150
SLRNLRGYYN QSEAGSHTLQ RMYGCDVGPD GRLLRGHDQS AYDGKDYIAL
160 170 180 190 200
NEDLSSWTAA DTAAQITQRK WEAARVAEQL RAYLEGTCVE WLRRHLENGK
210 220 230 240 250
ETLQRADPPK THVTHHPISD HEATLRCWAL GFYPAEITLT WQRDGEDQTQ
260 270 280 290 300
DTELVETRPA GDRTFQKWAA VVVPSGEEQR YTCHVQHEGL PKPLTLRWEP
310 320 330 340 350
SSQSTIPIVG IVAGLAVLAV VVIGAVVATV MCRRKSSGGK GGSYSQAASS
360
DSAQGSDVSL TA
Length:362
Mass (Da):40,275
Last modified:April 1, 1993 - v1
Checksum:i106552F4A0F28E17
GO

Polymorphismi

The following alleles of B-18 are known: B*18:01 B*18:02, B*18:03, B*18:07 (B*MF), B*18:10, B*18:11, B*18:12 and B*18:13. The sequence shown is that of B*18:01.

Natural variant

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti87 – 871N → E in allele B*18:12; requires 2 nucleotide substitutions. 1 Publication
VAR_016661
Natural varianti91 – 911S → F in allele B*18:07.
VAR_016662
Natural varianti98 – 981Y → D in allele B*18:03.
VAR_016377
Natural varianti121 – 1211R → N in allele B*18:02; requires 2 nucleotide substitutions.
VAR_016378
Natural varianti180 – 1801L → R in allele B*18:13.
VAR_016663
Natural varianti187 – 1871T → E in allele B*18:10; requires 2 nucleotide substitutions.
VAR_016664
Natural varianti195 – 1951H → Y in allele B*18:10 and allele B*18:11.
VAR_016665

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M24039 Genomic DNA. Translation: AAA59662.1.
D25275 mRNA. Translation: BAA04965.1.
AJ310507 Genomic DNA. Translation: CAC34572.1.
AJ309979 Genomic DNA. Translation: CAC34305.1.
AL845443 Genomic DNA. Translation: CAI41903.1.
AH007328 Genomic DNA. Translation: AAD13298.1.
AF054010, AF054009 Genomic DNA. Translation: AAC32821.1.
AH008878 Genomic DNA. Translation: AAF20813.1.
AH009390 Genomic DNA. Translation: AAF73066.1.
AH009624 Genomic DNA. Translation: AAF85974.1.
AF310139, AF310138 Genomic DNA. Translation: AAG27466.1.
PIRiI61860.
UniGeneiHs.654404.
Hs.77961.

Genome annotation databases

EnsembliENST00000359635; ENSP00000352656; ENSG00000206450.
UCSCiuc011imy.2. human.

Keywords - Coding sequence diversityi

Polymorphism

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M24039 Genomic DNA. Translation: AAA59662.1.
D25275 mRNA. Translation: BAA04965.1.
AJ310507 Genomic DNA. Translation: CAC34572.1.
AJ309979 Genomic DNA. Translation: CAC34305.1.
AL845443 Genomic DNA. Translation: CAI41903.1.
AH007328 Genomic DNA. Translation: AAD13298.1.
AF054010, AF054009 Genomic DNA. Translation: AAC32821.1.
AH008878 Genomic DNA. Translation: AAF20813.1.
AH009390 Genomic DNA. Translation: AAF73066.1.
AH009624 Genomic DNA. Translation: AAF85974.1.
AF310139, AF310138 Genomic DNA. Translation: AAG27466.1.
PIRiI61860.
UniGeneiHs.654404.
Hs.77961.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
4JQVX-ray1.50A25-302[»]
4XXCX-ray1.43A25-303[»]
ProteinModelPortaliP30466.
SMRiP30466. Positions 25-300.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi109351. 60 interactions.

Polymorphism and mutation databases

DMDMi231388.

Proteomic databases

MaxQBiP30466.
PaxDbiP30466.
PRIDEiP30466.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000359635; ENSP00000352656; ENSG00000206450.
UCSCiuc011imy.2. human.

Organism-specific databases

GeneCardsiGC06M031321.
GC06Mn31311.
HGNCiHGNC:4932. HLA-B.
MIMi142830. gene.
neXtProtiNX_P30466.
GenAtlasiSearch...

Phylogenomic databases

eggNOGiNOG42056.
HOVERGENiHBG016709.
OMAiRDLRSWI.
PhylomeDBiP30466.

Enzyme and pathway databases

ReactomeiREACT_111168. Endosomal/Vacuolar pathway.
REACT_111178. ER-Phagosome pathway.
REACT_11152. Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell.
REACT_25078. Interferon gamma signaling.
REACT_25162. Interferon alpha/beta signaling.
REACT_75795. Antigen Presentation: Folding, assembly and peptide loading of class I MHC.

Miscellaneous databases

ChiTaRSiHLA-B. human.
GenomeRNAii3106.
SOURCEiSearch...

Gene expression databases

CleanExiHS_HLA-B.

Family and domain databases

Gene3Di2.60.40.10. 1 hit.
3.30.500.10. 1 hit.
InterProiIPR007110. Ig-like_dom.
IPR013783. Ig-like_fold.
IPR003006. Ig/MHC_CS.
IPR003597. Ig_C1-set.
IPR011161. MHC_I-like_Ag-recog.
IPR011162. MHC_I/II-like_Ag-recog.
IPR027648. MHC_I_a.
IPR001039. MHC_I_a_a1/a2.
IPR010579. MHC_I_a_C.
[Graphical view]
PfamiPF07654. C1-set. 1 hit.
PF00129. MHC_I. 1 hit.
PF06623. MHC_I_C. 1 hit.
[Graphical view]
PRINTSiPR01638. MHCCLASSI.
SMARTiSM00407. IGc1. 1 hit.
[Graphical view]
SUPFAMiSSF54452. SSF54452. 1 hit.
PROSITEiPS50835. IG_LIKE. 1 hit.
PS00290. IG_MHC. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

« Hide 'large scale' publications
  1. "Diversity and diversification of HLA-A,B,C alleles."
    Parham P., Lawlor D.A., Lomen C.E., Ennis P.D.
    J. Immunol. 142:3937-3950(1989) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE (ALLELE B*18:01).
  2. Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ALLELE B*18:02).
    Tissue: Blood.
  3. Cited for: NUCLEOTIDE SEQUENCE (ALLELE B*18:01).
    Tissue: Blood.
  4. "Complete nucleotide sequencing of HLA class I genes."
    Dunn P.P.J.
    Submitted (MAR-2001) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE (ALLELE B*18:03).
  5. "The DNA sequence and analysis of human chromosome 6."
    Mungall A.J., Palmer S.A., Sims S.K., Edwards C.A., Ashurst J.L., Wilming L., Jones M.C., Horton R., Hunt S.E., Scott C.E., Gilbert J.G.R., Clamp M.E., Bethel G., Milne S., Ainscough R., Almeida J.P., Ambrose K.D., Andrews T.D.
    , Ashwell R.I.S., Babbage A.K., Bagguley C.L., Bailey J., Banerjee R., Barker D.J., Barlow K.F., Bates K., Beare D.M., Beasley H., Beasley O., Bird C.P., Blakey S.E., Bray-Allen S., Brook J., Brown A.J., Brown J.Y., Burford D.C., Burrill W., Burton J., Carder C., Carter N.P., Chapman J.C., Clark S.Y., Clark G., Clee C.M., Clegg S., Cobley V., Collier R.E., Collins J.E., Colman L.K., Corby N.R., Coville G.J., Culley K.M., Dhami P., Davies J., Dunn M., Earthrowl M.E., Ellington A.E., Evans K.A., Faulkner L., Francis M.D., Frankish A., Frankland J., French L., Garner P., Garnett J., Ghori M.J., Gilby L.M., Gillson C.J., Glithero R.J., Grafham D.V., Grant M., Gribble S., Griffiths C., Griffiths M.N.D., Hall R., Halls K.S., Hammond S., Harley J.L., Hart E.A., Heath P.D., Heathcott R., Holmes S.J., Howden P.J., Howe K.L., Howell G.R., Huckle E., Humphray S.J., Humphries M.D., Hunt A.R., Johnson C.M., Joy A.A., Kay M., Keenan S.J., Kimberley A.M., King A., Laird G.K., Langford C., Lawlor S., Leongamornlert D.A., Leversha M., Lloyd C.R., Lloyd D.M., Loveland J.E., Lovell J., Martin S., Mashreghi-Mohammadi M., Maslen G.L., Matthews L., McCann O.T., McLaren S.J., McLay K., McMurray A., Moore M.J.F., Mullikin J.C., Niblett D., Nickerson T., Novik K.L., Oliver K., Overton-Larty E.K., Parker A., Patel R., Pearce A.V., Peck A.I., Phillimore B.J.C.T., Phillips S., Plumb R.W., Porter K.M., Ramsey Y., Ranby S.A., Rice C.M., Ross M.T., Searle S.M., Sehra H.K., Sheridan E., Skuce C.D., Smith S., Smith M., Spraggon L., Squares S.L., Steward C.A., Sycamore N., Tamlyn-Hall G., Tester J., Theaker A.J., Thomas D.W., Thorpe A., Tracey A., Tromans A., Tubby B., Wall M., Wallis J.M., West A.P., White S.S., Whitehead S.L., Whittaker H., Wild A., Willey D.J., Wilmer T.E., Wood J.M., Wray P.W., Wyatt J.C., Young L., Younger R.M., Bentley D.R., Coulson A., Durbin R.M., Hubbard T., Sulston J.E., Dunham I., Rogers J., Beck S.
    Nature 425:805-811(2003) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
  6. "HLA-B typing with sequence specific oligonucleotides reveals a new allele, B*MF."
    Kennedy C.T., Dodd R., Le T., Wallace R., Ng G., Hersee J., Taverniti A., Kennedy A., Moses J., Trejaut J., Dunckley H.
    Submitted (JAN-1999) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE OF 26-206 (ALLELE B*18:07).
  7. Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 26-206 (ALLELES B*18:07; B*18:10; B*18:11; B*18:12 AND B*18:13).
  8. Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
  9. "An enzyme assisted RP-RPLC approach for in-depth analysis of human liver phosphoproteome."
    Bian Y., Song C., Cheng K., Dong M., Wang F., Huang J., Sun D., Wang L., Ye M., Zou H.
    J. Proteomics 96:253-262(2014) [PubMed] [Europe PMC] [Abstract]
    Cited for: VARIANT [LARGE SCALE ANALYSIS] GLU-87, IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS].
    Tissue: Liver.

Entry informationi

Entry namei1B18_HUMAN
AccessioniPrimary (citable) accession number: P30466
Secondary accession number(s): O62897
, Q29845, Q5JP37, Q9BCM6, Q9GJ23, Q9MY84, Q9MYC7, Q9TP37, Q9TQH7
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 1993
Last sequence update: April 1, 1993
Last modified: July 22, 2015
This is version 132 of the entry and version 1 of the sequence. [Complete history]
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.

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. Human chromosome 6
    Human chromosome 6: entries, gene names and cross-references to MIM
  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. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.