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Entry version 179 (17 Jun 2020)
Sequence version 3 (03 Mar 2009)
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Protein
Submitted name:

Nicotinic acetylcholine receptor alpha3, isoform B

Gene

nAChRalpha3

Organism
Drosophila melanogaster (Fruit fly)
Status
Unreviewed-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>
-Protein inferred from homologyi <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

<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

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 functionIon channel, Ligand-gated ion channelSAAS annotation, ReceptorSAAS annotationImported
Biological processIon transport, Transport

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-DME-629587 Highly sodium permeable acetylcholine nicotinic receptors
R-DME-629594 Highly calcium permeable postsynaptic nicotinic acetylcholine receptors
R-DME-629597 Highly calcium permeable nicotinic acetylcholine receptors
R-DME-6798695 Neutrophil degranulation

<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%5Fand%5Ftaxonomy%5Fsection">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
Submitted name:
Nicotinic acetylcholine receptor alpha3, isoform BImported
Submitted name:
Nicotinic acetylcholine receptor alpha3, isoform CImported
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:nAChRalpha3Imported
Synonyms:Acr7EImported, alpha3Imported, D[a3]Imported, Da3Imported, Dalpha3Imported, Dalpha3 nAChRImported, Dmel\CG2302Imported, lincRNA.965Imported, nAChRImported, nACRalpha-7EImported, nAcRalpha-7EImported, nAcReImported, nicra3Imported
ORF Names:CG2302Imported, Dmel_CG2302Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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>OrganismiDrosophila melanogaster (Fruit fly)Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri7227 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiEukaryotaMetazoaEcdysozoaArthropodaHexapodaInsectaPterygotaNeopteraHolometabolaDipteraBrachyceraMuscomorphaEphydroideaDrosophilidaeDrosophilaSophophora
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000000803 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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 X

Organism-specific databases

Drosophila genome database

More...
FlyBasei
FBgn0015519 nAChRalpha3

<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%5Flocation%5Fsection">'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>Transmembranei242 – 265HelicalUniRule annotationAdd BLAST24
Transmembranei277 – 295HelicalUniRule annotationAdd BLAST19
Transmembranei307 – 328HelicalUniRule annotationAdd BLAST22
Transmembranei744 – 764HelicalUniRule annotationAdd BLAST21

Keywords - Cellular componenti

Cell junction, Cell membraneSAAS annotation, Membrane, Postsynaptic cell membraneSAAS annotation, 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

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL3350223

<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 – 22UniRule annotationAdd BLAST22
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_501510096123 – 795UniRule annotationAdd BLAST773

Keywords - PTMi

Disulfide bondSAAS annotation

<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
FBgn0015519 Expressed in brain and 7 other tissues

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q9W3G6 differential

<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

Protein-protein interaction databases

Protein interaction database and analysis system

More...
IntActi
Q9W3G6, 1 interactor

STRING: functional protein association networks

More...
STRINGi
7227.FBpp0288426

<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%5Fand%5Fdomains%5Fsection">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>Domaini27 – 241Neur_chan_LBDInterPro annotationAdd BLAST215
Domaini248 – 760Neur_chan_membInterPro annotationAdd BLAST513

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>Regioni491 – 556DisorderedSequence analysisAdd BLAST66
Regioni607 – 643DisorderedSequence analysisAdd BLAST37

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi491 – 513PolarSequence analysisAdd BLAST23
Compositional biasi522 – 556PolarSequence analysisAdd BLAST35
Compositional biasi607 – 632PolarSequence analysisAdd BLAST26

<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. [View classification]UniRule annotationSAAS annotation

Keywords - Domaini

SignalUniRule annotation, Transmembrane, Transmembrane helixUniRule annotationSAAS annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG3645 Eukaryota
ENOG410XQGR LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000170660

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_018074_1_1_1

KEGG Orthology (KO)

More...
KOi
K05312

Identification of Orthologs from Complete Genome Data

More...
OMAi
HIDEIRG

Database of Orthologous Groups

More...
OrthoDBi
381858at2759

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
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, 2 hits

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%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

Q9W3G6-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKWFQVTIDM ILVLSFISSS TANPDAKRLY DDLLSNYNKL VRPVVNVTDA
60 70 80 90 100
LTVRIKLKLS QLIDVNLKNQ IMTTNLWVEQ SWYDYKLKWE PKEYGGVEML
110 120 130 140 150
HVPSDHIWRP DIVLYNNADG NFEVTLATKA TLNYTGRVEW RPPAIYKSSC
160 170 180 190 200
EIDVEYFPFD EQTCVMKFGS WTYDGFQVDL RHIDELNGTN VVEVGVDLSE
210 220 230 240 250
FYTSVEWDIL EVPAVRNEKF YTCCDEPYLD ITFNITMRRK TLFYTVNLII
260 270 280 290 300
PCMGISFLTI LVFYLPSDSG EKVSLSISIL LSLTVFFLLL AEIIPPTSLV
310 320 330 340 350
VPLLGKFVLF TMILDTFSIC VTVLVLNIHF RSPQTHTMAP WVRTVFINQL
360 370 380 390 400
PRFLVMRRPL YPISEMIKSS RRLMVRTCNG LELRDQIPPL PPPVALSRMH
410 420 430 440 450
HSPKTTSRST SPHLQHRVQT YNLMDECGMG MGGGASTITG HLSSLYPPTM
460 470 480 490 500
STANQQTSTT SSLIDAQYHN QYQQTGGSLL DHPLTPTKFR QMTSTSSQTG
510 520 530 540 550
QNGSGNGNGN GGYGGHGQSG GHHLYRQQSS CSANFSPLPQ HAHQAHASTT
560 570 580 590 600
TSDLGMANPN VIKSTTTVNS VATASTLADS CCSGTIQIHQ GMGAGAACQS
610 620 630 640 650
SELLHHQQLH HQQMHHQQQQ QQQQQHHHHQ RPTTSAAAAA AAAAAGGPST
660 670 680 690 700
SAAAAAAAAA AAAGTPPPPP PPAGVCDILP ACQREGGPHC CSGRGNVRQR
710 720 730 740 750
WHTCPELHKA MDGVTYIADQ TRKEEESTRV KEDWKYVAMV LDRLFLWIFT
760 770 780 790
IAVVVGTAGI ILQAPTLYDT RMPIDIKLSE IASTTAKPNV ARPVL
Length:795
Mass (Da):87,893
Last modified:March 3, 2009 - v3
<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:i7374F742A1808E47
GO

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
AE014298 Genomic DNA Translation: AAF46361.3
AE014298 Genomic DNA Translation: AHN59486.1

NCBI Reference Sequences

More...
RefSeqi
NP_001285015.1, NM_001298086.1
NP_525079.3, NM_080340.4

Genome annotation databases

Ensembl metazoan genome annotation project

More...
EnsemblMetazoai
FBtr0289988; FBpp0288426; FBgn0015519
FBtr0339652; FBpp0308714; FBgn0015519

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
31767

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
dme:Dmel_CG2302

<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
AE014298 Genomic DNA Translation: AAF46361.3
AE014298 Genomic DNA Translation: AHN59486.1
RefSeqiNP_001285015.1, NM_001298086.1
NP_525079.3, NM_080340.4

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

IntActiQ9W3G6, 1 interactor
STRINGi7227.FBpp0288426

Chemistry databases

ChEMBLiCHEMBL3350223

Genome annotation databases

EnsemblMetazoaiFBtr0289988; FBpp0288426; FBgn0015519
FBtr0339652; FBpp0308714; FBgn0015519
GeneIDi31767
KEGGidme:Dmel_CG2302

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
31767
FlyBaseiFBgn0015519 nAChRalpha3

Phylogenomic databases

eggNOGiKOG3645 Eukaryota
ENOG410XQGR LUCA
GeneTreeiENSGT00940000170660
HOGENOMiCLU_018074_1_1_1
KOiK05312
OMAiHIDEIRG
OrthoDBi381858at2759

Enzyme and pathway databases

ReactomeiR-DME-629587 Highly sodium permeable acetylcholine nicotinic receptors
R-DME-629594 Highly calcium permeable postsynaptic nicotinic acetylcholine receptors
R-DME-629597 Highly calcium permeable nicotinic acetylcholine receptors
R-DME-6798695 Neutrophil degranulation

Miscellaneous databases

BioGRID ORCS database of CRISPR phenotype screens

More...
BioGRID-ORCSi
31767 0 hits in 1 CRISPR screen

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

More...
ChiTaRSi
nAChRalpha3 fly

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

More...
GenomeRNAii
31767

Gene expression databases

BgeeiFBgn0015519 Expressed in brain and 7 other tissues
ExpressionAtlasiQ9W3G6 differential

Family and domain databases

Gene3Di2.70.170.10, 1 hit
InterProiView protein in InterPro
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, 2 hits
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...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
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 nameiQ9W3G6_DROME
<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: Q9W3G6
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/TrEMBL: May 1, 2000
Last sequence update: March 3, 2009
Last modified: June 17, 2020
This is version 179 of the entry and version 3 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 statusiUnreviewed (UniProtKB/TrEMBL)

<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

Reference proteomeImported
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

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