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UniProtKB - P17787 (ACHB2_HUMAN)

Entry version 198 (08 May 2019)
Sequence version 1 (01 Aug 1990)
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Protein

Neuronal acetylcholine receptor subunit beta-2

Gene

CHRNB2

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

After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane permeable to sodiun ions.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei84Key residue that may interfere with effective access of the conotoxin BuIA to the channel binding siteBy similarity1
Sitei136Key residue for a rapid dissociation (K(off)) from the conotoxin BuIABy similarity1
Sitei144Key residue for a rapid dissociation (K(off)) from the conotoxin BuIABy similarity1

<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

View the complete GO annotation on QuickGO ...

GO - Biological processi

View the complete GO annotation on QuickGO ...

<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 functionIon channel, Ligand-gated ion channel, Receptor
Biological processIon transport, Transport

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...Reactomei		R-HSA-629587 Highly sodium permeable acetylcholine nicotinic receptors
R-HSA-629594 Highly calcium permeable postsynaptic nicotinic acetylcholine receptors
R-HSA-629597 Highly calcium permeable nicotinic acetylcholine receptors

Protein family/group databases

Transport Classification Database

More...TCDBi		1.A.9.1.6 the neurotransmitter receptor, cys loop, ligand-gated ion channel (lic) family

<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:
Neuronal acetylcholine receptor subunit beta-2
<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
Name:CHRNB2
<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 lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo
<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 1

Organism-specific databases

Human Gene Nomenclature Database

More...HGNCi		HGNC:1962 CHRNB2

Online Mendelian Inheritance in Man (OMIM)

More...MIMi		118507 gene

neXtProt; the human protein knowledge platform

More...neXtProti		NX_P17787

<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 & Seán O’Donoghue; 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 domaini26 – 233ExtracellularSequence analysisAdd BLAST208
<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>Transmembranei234 – 258HelicalSequence analysisAdd BLAST25
Topological domaini259 – 265CytoplasmicSequence analysis7
Transmembranei266 – 284HelicalSequence analysisAdd BLAST19
Topological domaini285 – 299ExtracellularSequence analysisAdd BLAST15
Transmembranei300 – 321HelicalSequence analysisAdd BLAST22
Topological domaini322 – 458CytoplasmicSequence analysisAdd BLAST137
Transmembranei459 – 478HelicalSequence analysisAdd BLAST20

Keywords - Cellular componenti

Cell junction, Cell membrane, Membrane, Postsynaptic cell membrane, Synapse

<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

Epilepsy, nocturnal frontal lobe, 3 (ENFL3)2 Publications
The disease is caused by mutations affecting the gene represented in this entry.
Disease descriptionAn autosomal dominant focal epilepsy characterized by nocturnal seizures with hyperkinetic automatisms and poorly organized stereotyped movements.
See also OMIM:605375
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_012714287V → L in ENFL3. 1 PublicationCorresponds to variant dbSNP:rs74315291EnsemblClinVar.1
Natural variantiVAR_012715287V → M in ENFL3; approximately 10-fold increase in acetylcholine sensitivity. 1 PublicationCorresponds to variant dbSNP:rs74315291EnsemblClinVar.1

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi197F → Y: Increases ligand activation in LS and HS nAChR subtypes. 1 Publication1

Keywords - Diseasei

Disease mutation, Epilepsy

Organism-specific databases

DisGeNET

More...DisGeNETi		1141

GeneReviews a resource of expert-authored, peer-reviewed disease descriptions.

More...GeneReviewsi		CHRNB2

MalaCards human disease database

More...MalaCardsi		CHRNB2
MIMi605375 phenotype

Open Targets

More...OpenTargetsi		ENSG00000160716

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

More...Orphaneti		98784 Autosomal dominant nocturnal frontal lobe epilepsy

The Pharmacogenetics and Pharmacogenomics Knowledge Base

More...PharmGKBi		PA115

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...ChEMBLi		CHEMBL1883

Drug and drug target database

More...DrugBanki		DB05458 ABT-089
DB00514 Dextromethorphan
DB00898 Ethanol
DB00674 Galantamine
DB00184 Nicotine
DB05855 Rivanicline
DB05740 RPI-78M

Polymorphism and mutation databases

BioMuta curated single-nucleotide variation and disease association database

More...BioMutai		CHRNB2

Domain mapping of disease mutations (DMDM)

More...DMDMi		113105

<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 – 25By similarityAdd BLAST25
<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_000000037926 – 502Neuronal acetylcholine receptor subunit beta-2Add BLAST477

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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>Glycosylationi51N-linked (GlcNAc...) asparagineSequence analysis1
<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 bondi155 ↔ 169By similarity
Glycosylationi168N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi485N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P17787

PeptideAtlas

More...PeptideAtlasi		P17787

PRoteomics IDEntifications database

More...PRIDEi		P17787

ProteomicsDB human proteome resource

More...ProteomicsDBi		53515

PTM databases

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

More...PhosphoSitePlusi		P17787

<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

More...Bgeei		ENSG00000160716 Expressed in 191 organ(s), highest expression level in epithelium of bronchus

ExpressionAtlas, Differential and Baseline Expression

More...ExpressionAtlasi		P17787 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...Genevisiblei		P17787 HS

<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

Neuronal AChR is composed of two different types of subunits: alpha and beta. Beta-2 subunit can be combined to alpha-2, alpha-3 or alpha-4 to give rise to functional receptors, complexes with beta-2 may be heteropentamers. Alpha-2/4:beta-2 nAChR complexes are proposed to exist in two subtypes: LS (low agonist sensitivity) with a (alpha-2/4)3:(beta-2)2 and HS (high agonist sensitivity) with a (alpha-2/4)2:(beta-2)3 stoichiometry; the subtypes differ in their subunit binding interfaces which are involved in ligand binding (PubMed:27493220, PubMed:22361591). Interacts with RIC3; which is required for proper folding and assembly (PubMed:16120769). Interacts with LYPD6 (PubMed:27344019). The heteropentamer alpha-3-beta-2 interacts with alpha-conotoxins BuIA, MII, PnIA and GID (By similarity). The heteropentamer alpha-3-beta-2 interacts with the alpha-conotoxins ImI and ImII (PubMed:15609996). The heteropentamer alpha-4-beta-2 interacts with the alpha-conotoxins PnIA, GID and MII (By similarity).By similarity1 Publication4 Publications

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

GO - Molecular functioni

View the complete GO annotation on QuickGO ...

Protein-protein interaction databases

ComplexPortal: manually curated resource of macromolecular complexes

More...ComplexPortali		CPX-168 Neuronal nicotinic acetylcholine receptor complex, 3xalpha4-2xbeta2
CPX-187 Neuronal nicotinic acetylcholine receptor complex, alpha3-alpha5-beta2
CPX-2170 Neuronal nicotinic acetylcholine receptor complex, alpha2-beta2
CPX-2180 Neuronal nicotinic acetylcholine receptor complex, 2xalpha4-3xbeta2
CPX-218 Neuronal nicotinic acetylcholine receptor complex, alpha4-alpha5-beta2
CPX-2192 Neuronal nicotinic acetylcholine receptor complex, alpha3-alpha6-beta2-beta3
CPX-2193 Neuronal nicotinic acetylcholine receptor complex, alpha3-beta2
CPX-240 Neuronal nicotinic acetylcholine receptor complex, alpha7-beta2

CORUM comprehensive resource of mammalian protein complexes

More...CORUMi		P17787

Protein interaction database and analysis system

More...IntActi		P17787, 4 interactors

STRING: functional protein association networks

More...STRINGi		9606.ENSP00000357461

Chemistry databases

BindingDB database of measured binding affinities

More...BindingDBi		P17787

<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

1502
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2GVTmodel-B/D/E30-233[»]
2K58NMR-B231-265[»]
2K59NMR-B264-291[»]
2KSRNMR-A231-330[»]
A453-486[»]
2LM2NMR-A231-330[»]
A458-485[»]
5KXIX-ray3.94B/C/E26-355[»]
B/C/E446-502[»]
6CNJelectron microscopy3.40B/C/E26-353[»]
B/C/E446-502[»]
6CNKelectron microscopy3.70C/E26-353[»]
C/E446-502[»]

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

More...SMRi		P17787

Database of comparative protein structure models

More...ModBasei		Search...

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...EvolutionaryTracei		P17787

<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

<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 ligand-gated ion channel (TC 1.A.9) family. Acetylcholine receptor (TC 1.A.9.1) subfamily. Beta-2/CHRNB2 sub-subfamily. [View classification]Curated

Keywords - Domaini

Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		KOG3645 Eukaryota
ENOG410XQGR LUCA

Ensembl GeneTree

More...GeneTreei		ENSGT00940000158417

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		HOG000006757

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P17787

KEGG Orthology (KO)

More...KOi		K04813

Database of Orthologous Groups

More...OrthoDBi		381858at2759

Database for complete collections of gene phylogenies

More...PhylomeDBi		P17787

TreeFam database of animal gene trees

More...TreeFami		TF315605

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		2.70.170.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR032932 CHRNB2
IPR006202 Neur_chan_lig-bd
IPR036734 Neur_chan_lig-bd_sf
IPR006201 Neur_channel
IPR036719 Neuro-gated_channel_TM_sf
IPR006029 Neurotrans-gated_channel_TM
IPR018000 Neurotransmitter_ion_chnl_CS
IPR002394 Nicotinic_acetylcholine_rcpt

The PANTHER Classification System

More...PANTHERi		PTHR18945 PTHR18945, 1 hit
PTHR18945:SF80 PTHR18945:SF80, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF02931 Neur_chan_LBD, 1 hit
PF02932 Neur_chan_memb, 1 hit

Protein Motif fingerprint database; a protein domain database

More...PRINTSi		PR00254 NICOTINICR
PR00252 NRIONCHANNEL

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF63712 SSF63712, 1 hit
SSF90112 SSF90112, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR00860 LIC, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00236 NEUROTR_ION_CHANNEL, 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 3 potential isoforms that are computationally mapped.Show allAlign All

P17787-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MARRCGPVAL LLGFGLLRLC SGVWGTDTEE RLVEHLLDPS RYNKLIRPAT 
        60         70         80         90        100
NGSELVTVQL MVSLAQLISV HEREQIMTTN VWLTQEWEDY RLTWKPEEFD 
       110        120        130        140        150
NMKKVRLPSK HIWLPDVVLY NNADGMYEVS FYSNAVVSYD GSIFWLPPAI 
       160        170        180        190        200
YKSACKIEVK HFPFDQQNCT MKFRSWTYDR TEIDLVLKSE VASLDDFTPS 
       210        220        230        240        250
GEWDIVALPG RRNENPDDST YVDITYDFII RRKPLFYTIN LIIPCVLITS 
       260        270        280        290        300
LAILVFYLPS DCGEKMTLCI SVLLALTVFL LLISKIVPPT SLDVPLVGKY 
       310        320        330        340        350
LMFTMVLVTF SIVTSVCVLN VHHRSPTTHT MAPWVKVVFL EKLPALLFMQ 
       360        370        380        390        400
QPRHHCARQR LRLRRRQRER EGAGALFFRE APGADSCTCF VNRASVQGLA 
       410        420        430        440        450
GAFGAEPAPV AGPGRSGEPC GCGLREAVDG VRFIADHMRS EDDDQSVSED 
       460        470        480        490        500
WKYVAMVIDR LFLWIFVFVC VFGTIGMFLQ PLFQNYTTTT FLHSDHSAPS 

SK
Length:502
Mass (Da):57,019
Last modified:August 1, 1990 - v1
<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:i7EEDEF6ADFDC9F23
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 3 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A1B0GTH5A0A1B0GTH5_HUMAN
Neuronal acetylcholine receptor sub...
CHRNB2
518Annotation score:

Annotation score:2 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>
A0A1B0GVD7A0A1B0GVD7_HUMAN
Neuronal acetylcholine receptor sub...
CHRNB2
504Annotation score:

Annotation score:2 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>
A0A1B0GUQ6A0A1B0GUQ6_HUMAN
Neuronal acetylcholine receptor sub...
CHRNB2
34Annotation score:

Annotation score:1 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 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 conflicti26T → A in CAA05108 (PubMed:9921897).Curated1
Sequence conflicti426E → A in CAA05108 (PubMed:9921897).Curated1
Sequence conflicti446S → SVR in CAA05108 (PubMed:9921897).Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural variantiVAR_012714287V → L in ENFL3. 1 PublicationCorresponds to variant dbSNP:rs74315291EnsemblClinVar.1
Natural variantiVAR_012715287V → M in ENFL3; approximately 10-fold increase in acetylcholine sensitivity. 1 PublicationCorresponds to variant dbSNP:rs74315291EnsemblClinVar.1
Natural variantiVAR_021564397Q → H1 PublicationCorresponds to variant dbSNP:rs55685423EnsemblClinVar.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
X53179 mRNA Translation: CAA37320.1
U62437 mRNA Translation: AAB40115.1
Y08415 mRNA Translation: CAA69692.1
AJ001935
, AJ001936, AJ001937, AJ001938, AJ001939 Genomic DNA Translation: CAA05108.1
AF077186 Genomic DNA Translation: AAD45422.1
BC075040 mRNA Translation: AAH75040.1
BC075041 mRNA Translation: AAH75041.1

The Consensus CDS (CCDS) project

More...CCDSi		CCDS1070.1

Protein sequence database of the Protein Information Resource

More...PIRi		S10505

NCBI Reference Sequences

More...RefSeqi		NP_000739.1, NM_000748.2

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...Ensembli		ENST00000368476; ENSP00000357461; ENSG00000160716

Database of genes from NCBI RefSeq genomes

More...GeneIDi		1141

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		hsa:1141

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
X53179 mRNA Translation: CAA37320.1
U62437 mRNA Translation: AAB40115.1
Y08415 mRNA Translation: CAA69692.1
AJ001935
, AJ001936, AJ001937, AJ001938, AJ001939 Genomic DNA Translation: CAA05108.1
AF077186 Genomic DNA Translation: AAD45422.1
BC075040 mRNA Translation: AAH75040.1
BC075041 mRNA Translation: AAH75041.1
CCDSiCCDS1070.1
PIRiS10505
RefSeqiNP_000739.1, NM_000748.2

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2GVTmodel-B/D/E30-233[»]
2K58NMR-B231-265[»]
2K59NMR-B264-291[»]
2KSRNMR-A231-330[»]
A453-486[»]
2LM2NMR-A231-330[»]
A458-485[»]
5KXIX-ray3.94B/C/E26-355[»]
B/C/E446-502[»]
6CNJelectron microscopy3.40B/C/E26-353[»]
B/C/E446-502[»]
6CNKelectron microscopy3.70C/E26-353[»]
C/E446-502[»]
SMRiP17787
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

ComplexPortaliCPX-168 Neuronal nicotinic acetylcholine receptor complex, 3xalpha4-2xbeta2
CPX-187 Neuronal nicotinic acetylcholine receptor complex, alpha3-alpha5-beta2
CPX-2170 Neuronal nicotinic acetylcholine receptor complex, alpha2-beta2
CPX-2180 Neuronal nicotinic acetylcholine receptor complex, 2xalpha4-3xbeta2
CPX-218 Neuronal nicotinic acetylcholine receptor complex, alpha4-alpha5-beta2
CPX-2192 Neuronal nicotinic acetylcholine receptor complex, alpha3-alpha6-beta2-beta3
CPX-2193 Neuronal nicotinic acetylcholine receptor complex, alpha3-beta2
CPX-240 Neuronal nicotinic acetylcholine receptor complex, alpha7-beta2
CORUMiP17787
IntActiP17787, 4 interactors
STRINGi9606.ENSP00000357461

Chemistry databases

BindingDBiP17787
ChEMBLiCHEMBL1883
DrugBankiDB05458 ABT-089
DB00514 Dextromethorphan
DB00898 Ethanol
DB00674 Galantamine
DB00184 Nicotine
DB05855 Rivanicline
DB05740 RPI-78M

Protein family/group databases

TCDBi1.A.9.1.6 the neurotransmitter receptor, cys loop, ligand-gated ion channel (lic) family

PTM databases

PhosphoSitePlusiP17787

Polymorphism and mutation databases

BioMutaiCHRNB2
DMDMi113105

Proteomic databases

PaxDbiP17787
PeptideAtlasiP17787
PRIDEiP17787
ProteomicsDBi53515

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000368476; ENSP00000357461; ENSG00000160716
GeneIDi1141
KEGGihsa:1141

Organism-specific databases

Comparative Toxicogenomics Database

More...CTDi		1141
DisGeNETi1141

GeneCards: human genes, protein and diseases

More...GeneCardsi		CHRNB2
GeneReviewsiCHRNB2
HGNCiHGNC:1962 CHRNB2
MalaCardsiCHRNB2
MIMi118507 gene
605375 phenotype
neXtProtiNX_P17787
OpenTargetsiENSG00000160716
Orphaneti98784 Autosomal dominant nocturnal frontal lobe epilepsy
PharmGKBiPA115

GenAtlas: human gene database

More...GenAtlasi		Search...

Phylogenomic databases

eggNOGiKOG3645 Eukaryota
ENOG410XQGR LUCA
GeneTreeiENSGT00940000158417
HOGENOMiHOG000006757
InParanoidiP17787
KOiK04813
OrthoDBi381858at2759
PhylomeDBiP17787
TreeFamiTF315605

Enzyme and pathway databases

ReactomeiR-HSA-629587 Highly sodium permeable acetylcholine nicotinic receptors
R-HSA-629594 Highly calcium permeable postsynaptic nicotinic acetylcholine receptors
R-HSA-629597 Highly calcium permeable nicotinic acetylcholine receptors

Miscellaneous databases

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

More...ChiTaRSi		CHRNB2 human
EvolutionaryTraceiP17787

The Gene Wiki collection of pages on human genes and proteins

More...GeneWikii		CHRNB2

Database of phenotypes from RNA interference screens in Drosophila and Homo sapiens

More...GenomeRNAii		1141

Protein Ontology

More...PROi		PR:P17787

The Stanford Online Universal Resource for Clones and ESTs

More...SOURCEi		Search...

Gene expression databases

BgeeiENSG00000160716 Expressed in 191 organ(s), highest expression level in epithelium of bronchus
ExpressionAtlasiP17787 baseline and differential
GenevisibleiP17787 HS

Family and domain databases

Gene3Di2.70.170.10, 1 hit
InterProiView protein in InterPro
IPR032932 CHRNB2
IPR006202 Neur_chan_lig-bd
IPR036734 Neur_chan_lig-bd_sf
IPR006201 Neur_channel
IPR036719 Neuro-gated_channel_TM_sf
IPR006029 Neurotrans-gated_channel_TM
IPR018000 Neurotransmitter_ion_chnl_CS
IPR002394 Nicotinic_acetylcholine_rcpt
PANTHERiPTHR18945 PTHR18945, 1 hit
PTHR18945:SF80 PTHR18945:SF80, 1 hit
PfamiView protein in Pfam
PF02931 Neur_chan_LBD, 1 hit
PF02932 Neur_chan_memb, 1 hit
PRINTSiPR00254 NICOTINICR
PR00252 NRIONCHANNEL
SUPFAMiSSF63712 SSF63712, 1 hit
SSF90112 SSF90112, 1 hit
TIGRFAMsiTIGR00860 LIC, 1 hit
PROSITEiView protein in PROSITE
PS00236 NEUROTR_ION_CHANNEL, 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 nameiACHB2_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: P17787
Secondary accession number(s): Q9UEH9
<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: August 1, 1990
Last sequence update: August 1, 1990
Last modified: May 8, 2019
This is version 198 of the entry and version 1 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, Reference proteome

Documents

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