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Entry version 124 (08 May 2019)
Sequence version 2 (01 Oct 2000)
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Protein

Double C2-like domain-containing protein beta

Gene

Doc2b

Organism
Rattus norvegicus (Rat)
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

Calcium sensor which positively regulates SNARE-dependent fusion of vesicles with membranes. Binds phospholipids in a calcium-dependent manner and may act at the priming stage of fusion by modifying membrane curvature to stimulate fusion. Involved in calcium-triggered exocytosis in chromaffin cells and calcium-dependent spontaneous release of neurotransmitter in absence of action potentials in neuronal cells. Involved both in glucose-stimulated insulin secretion in pancreatic cells and insulin-dependent GLUT4 transport to the plasma membrane in adipocytes.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

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

LigandCalcium, Calcium/phospholipid-binding

<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:
Double C2-like domain-containing protein beta
Short name:
Doc2-beta
<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:Doc2b
<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>OrganismiRattus norvegicus (Rat)
<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 identifieri10116 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
<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
  • UP000002494 <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: Unplaced

Organism-specific databases

Rat genome database

More...
RGDi
620519 Doc2b

<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

Keywords - Cellular componenti

Cell membrane, Cytoplasm, Membrane

<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

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>Mutagenesisi15 – 20QEHMAI → YKDWAF: Prevents diacylglycerol-induced localization to the plasma membrane. Probably prevents interaction with UNC13A. 1 Publication6
Mutagenesisi158H → A: Loss of calcium-dependent binding to liposomes and altered fusion-promoting activity; when associated with A-222 and A-360. 1 Publication1
Mutagenesisi218D → N: Binds liposomes in a calcium-independent manner; when associated with N-220. 1 Publication1
Mutagenesisi220D → N: Binds liposomes in a calcium-independent manner; when associated with N-218. 1 Publication1
Mutagenesisi222F → A: Loss of calcium-dependent binding to liposomes and altered fusion-promoting activity; when associated with A-158 and A-360. 1 Publication1
Mutagenesisi237K → E: Loss of calcium-independent binding to liposomes. Loss of interaction with the SNARE complex and altered fusion-promoting activity; when associated with E-319. 1 Publication1
Mutagenesisi319K → E: Loss of calcium-independent binding to liposomes. Loss of interaction with the SNARE complex and altered fusion-promoting activity; when associated with E-237. 1 Publication1
Mutagenesisi360I → A: Loss of calcium-dependent binding to liposomes and altered fusion-promoting activity; when associated with A-158 and A-222. 1 Publication1

<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 describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000799701 – 412Double C2-like domain-containing protein betaAdd BLAST412

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei411PhosphoserineCombined sources1

Keywords - PTMi

Phosphoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
P70610

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P70610

<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

<p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Expressed in brain; highly enriched in neurons.1 Publication

<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

Interacts with STX4; the interaction is calcium-dependent, increased by insulin and glucose, and mediates vesicle fusion with plasma membrane in pancreatic cells and adipocytes.

Interacts with STXBP3; the interaction is direct, occurs at the cell membrane and regulates glucose-stimulated insulin secretion (By similarity).

Interacts with cytoplasmic dynein light chain DYNLT1.

Interacts with the SNARE (soluble N-ethylmaleimide-sensitive factor attached protein receptor) complex composed of SNAP25, STX1A and VAMP2; the interaction is calcium-dependent and competitive with SYT1. May interact with UNC13A; the interaction mediates targeting to the plasma membrane.

By similarity4 Publications

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
10116.ENSRNOP00000008429

<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

1412
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

More...
SMRi
P70610

Database of comparative protein structure models

More...
ModBasei
Search...

<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>Domaini128 – 232C2 1PROSITE-ProRule annotationAdd BLAST105
Domaini268 – 371C2 2PROSITE-ProRule annotationAdd BLAST104

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>Regioni1 – 90Mediates interaction with DYNLT1By similarityAdd BLAST90
Regioni1 – 36Negatively regulates targeting to plasma membraneBy similarityAdd BLAST36
Regioni257 – 375Mediates interaction with STXBP3By similarityAdd BLAST119

<p>This subsection of the ‘Family and domains’ section provides general information on the biological role of a domain. The term ‘domain’ is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

C2 domain 1 is involved in binding calcium and phospholipids. C2 domain 2 may also play a role in the calcium-dependent targeting to membranes (By similarity).By similarity

Keywords - Domaini

Repeat

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000232127

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P70610

KEGG Orthology (KO)

More...
KOi
K19917

Database of Orthologous Groups

More...
OrthoDBi
374694at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P70610

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.60.40.150, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000008 C2_dom
IPR035892 C2_domain_sf
IPR014638 Doc2
IPR030534 Doc2b
IPR001565 Synaptotagmin

The PANTHER Classification System

More...
PANTHERi
PTHR45729:SF9 PTHR45729:SF9, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00168 C2, 2 hits

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF036931 Doc2, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00360 C2DOMAIN
PR00399 SYNAPTOTAGMN

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00239 C2, 2 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50004 C2, 2 hits

<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>. 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>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.

This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

P70610-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTLRRRGEKA TISIQEHMAI DVCPGPIRPI KQISDYFPRF PRGLPPTAAP
60 70 80 90 100
RASAPPDAPA RSPAATAGPR SPSDGARDDD EDVDQLFGAY GASPGPSPGP
110 120 130 140 150
SPVRPPAKPP EDEPDADGYE SDDCTALGTL DFSLLYDQEN NALHCTISKA
160 170 180 190 200
KGLKPMDHNG LADPYVKLHL LPGASKANKL RTKTLRNTLN PSWNETLTYY
210 220 230 240 250
GITDEDMIRK TLRISVCDED KFRHNEFIGE TRVPLKKLKP NHTKTFSICL
260 270 280 290 300
EKQLPVDKAE DKSLEERGRI LISLKYSSQK QGLLVGIVRC AHLAAMDANG
310 320 330 340 350
YSDPYVKTYL KPDVDKKSKH KTAVKKKTLN PEFNEEFCYE IKHGDLAKKT
360 370 380 390 400
LEVTVWDYDI GKSNDFIGGV VLGINAKGER LKHWFDCLKN KDKRIERWHT
410
LTNEIPGAVL SD
Length:412
Mass (Da):45,841
Last modified:October 1, 2000 - 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:i61595BC6886F1012
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 is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A0G2K8B5A0A0G2K8B5_RAT
Double C2-like domain-containing pr...
Doc2b
410Annotation 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>

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
U70778 mRNA Translation: AAB47747.2

NCBI Reference Sequences

More...
RefSeqi
NP_112404.1, NM_031142.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
81820

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
rno:81820

<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
U70778 mRNA Translation: AAB47747.2
RefSeqiNP_112404.1, NM_031142.1

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
4LCVX-ray2.00A/B/C/D125-255[»]
4LDCX-ray1.26A265-412[»]
SMRiP70610
ModBaseiSearch...

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000008429

PTM databases

iPTMnetiP70610

Proteomic databases

PRIDEiP70610

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi81820
KEGGirno:81820

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
8447
RGDi620519 Doc2b

Phylogenomic databases

HOGENOMiHOG000232127
InParanoidiP70610
KOiK19917
OrthoDBi374694at2759
PhylomeDBiP70610

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P70610

Family and domain databases

Gene3Di2.60.40.150, 2 hits
InterProiView protein in InterPro
IPR000008 C2_dom
IPR035892 C2_domain_sf
IPR014638 Doc2
IPR030534 Doc2b
IPR001565 Synaptotagmin
PANTHERiPTHR45729:SF9 PTHR45729:SF9, 1 hit
PfamiView protein in Pfam
PF00168 C2, 2 hits
PIRSFiPIRSF036931 Doc2, 1 hit
PRINTSiPR00360 C2DOMAIN
PR00399 SYNAPTOTAGMN
SMARTiView protein in SMART
SM00239 C2, 2 hits
PROSITEiView protein in PROSITE
PS50004 C2, 2 hits

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 nameiDOC2B_RAT
<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: P70610
<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 31, 2004
Last sequence update: October 1, 2000
Last modified: May 8, 2019
This is version 124 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

<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. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
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