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Entry version 105 (08 May 2019)
Sequence version 1 (01 Dec 2001)
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Protein
Submitted name:

C2 protein

Gene

C2

Organism
Homo sapiens (Human)
Status
Unreviewed-Annotation 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>
-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

Caution

Lacks conserved residue(s) required for the propagation of feature annotation.PROSITE-ProRule annotation

<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>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
Submitted name:
C2 proteinImported
<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:C2Imported
<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)Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri9606 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

<p>This 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

<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 – 20Sequence analysisAdd BLAST20
<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_500432204121 – 577Sequence analysisAdd BLAST557

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi117 ↔ 144PROSITE-ProRule annotation
Disulfide bondi177 ↔ 204PROSITE-ProRule annotation

<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>Keywords - PTMi

Disulfide bondPROSITE-ProRule annotationSAAS annotation

Proteomic databases

PeptideAtlas

More...
PeptideAtlasi
Q95IG1

PRoteomics IDEntifications database

More...
PRIDEi
Q95IG1

<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>Domaini22 – 86SushiInterPro annotationAdd BLAST65
Domaini87 – 146SushiInterPro annotationAdd BLAST60
Domaini149 – 206SushiInterPro annotationAdd BLAST58
Domaini254 – 452VWFAInterPro annotationAdd BLAST199
Domaini464 – 577Peptidase S1InterPro annotationAdd BLAST114

<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 peptidase S1 family.SAAS annotation

Keywords - Domaini

SignalSequence analysis, SushiPROSITE-ProRule annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG3627 Eukaryota
COG5640 LUCA

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00033 CCP, 3 hits

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.50.410, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011360 Compl_C2_B
IPR037568 Complement_C2
IPR009003 Peptidase_S1_PA
IPR001314 Peptidase_S1A
IPR035976 Sushi/SCR/CCP_sf
IPR000436 Sushi_SCR_CCP_dom
IPR001254 Trypsin_dom
IPR018114 TRYPSIN_HIS
IPR002035 VWF_A
IPR036465 vWFA_dom_sf

The PANTHER Classification System

More...
PANTHERi
PTHR46393:SF2 PTHR46393:SF2, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00084 Sushi, 2 hits
PF00089 Trypsin, 1 hit
PF00092 VWA, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF001154 Compl_C2_B, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00722 CHYMOTRYPSIN

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00032 CCP, 3 hits
SM00327 VWA, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF50494 SSF50494, 1 hit
SSF53300 SSF53300, 1 hit
SSF57535 SSF57535, 3 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50923 SUSHI, 3 hits
PS50240 TRYPSIN_DOM, 1 hit
PS00134 TRYPSIN_HIS, 1 hit
PS50234 VWFA, 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>. 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_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: Fragment.

Q95IG1-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGPLMVLFCL LFLYPGLADS APSCPQNVNI SGGTFTLSHG WAPGSLLTYS
60 70 80 90 100
CPQGLYPSPA SRLCKSSGQW QTPGATRSLS KAVCKPVRCP APVSFENGIY
110 120 130 140 150
TPRLGSYPVG GNVSFECEDG FILRGSPVRQ CRPNGMWDGE TAVCDNGAGH
160 170 180 190 200
CPNPGISLGA VRTGFRFGHG DKVRYRCSSN LVLTGSSERE CQGNGVWSGT
210 220 230 240 250
EPICRQPYSY DFPEDVAPAL GTSFSHMLGA TNPTQKTKES LGRKIQIQRS
260 270 280 290 300
GHLNLYLLLD CSQSVSENDF LIFKESASLM VDRIFSFEIN VSVAIITFAS
310 320 330 340 350
EPKVLMSVLN DNSRDMTEVI SSLENANYKD HENGTGTNTY AALNSVYLMM
360 370 380 390 400
NNQMRLLGME TMAWQEIRHA IILLTDGKSN MGGSPKTAVD HIREILNINQ
410 420 430 440 450
KRNDYLDIYA IGVGKLDVDW RELNELGSKK DGERHAFILQ DTKALHQVFE
460 470 480 490 500
HMLDVSKLTD TICGVGNMSA NASDQERTPW HVTIKPKSQE TCRGALISDQ
510 520 530 540 550
WVLTAAHCFR DGNDHSLWRV NVGDPKSQWG KEFLIEKAVI SPGFDVFAKK
560 570
NQGILEFYGD DIALLKLAQK VKMSTHA
Length:577
Mass (Da):63,458
Last modified:December 1, 2001 - 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:i4C50E25028CB891B
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section is used for sequence fragments to indicate that the residue at the extremity of the sequence is not the actual terminal residue in the complete protein sequence.<p><a href='/help/non_ter' target='_top'>More...</a></p>Non-terminal residuei577Imported1

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
BA000025 Genomic DNA Translation: BAB63292.1

<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
BA000025 Genomic DNA Translation: BAB63292.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

SWISS-MODEL Interactive Workspace

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

Proteomic databases

PeptideAtlasiQ95IG1
PRIDEiQ95IG1

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

eggNOGiKOG3627 Eukaryota
COG5640 LUCA

Miscellaneous databases

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

More...
ChiTaRSi
C2 human

Family and domain databases

CDDicd00033 CCP, 3 hits
Gene3Di3.40.50.410, 1 hit
InterProiView protein in InterPro
IPR011360 Compl_C2_B
IPR037568 Complement_C2
IPR009003 Peptidase_S1_PA
IPR001314 Peptidase_S1A
IPR035976 Sushi/SCR/CCP_sf
IPR000436 Sushi_SCR_CCP_dom
IPR001254 Trypsin_dom
IPR018114 TRYPSIN_HIS
IPR002035 VWF_A
IPR036465 vWFA_dom_sf
PANTHERiPTHR46393:SF2 PTHR46393:SF2, 1 hit
PfamiView protein in Pfam
PF00084 Sushi, 2 hits
PF00089 Trypsin, 1 hit
PF00092 VWA, 1 hit
PIRSFiPIRSF001154 Compl_C2_B, 1 hit
PRINTSiPR00722 CHYMOTRYPSIN
SMARTiView protein in SMART
SM00032 CCP, 3 hits
SM00327 VWA, 1 hit
SUPFAMiSSF50494 SSF50494, 1 hit
SSF53300 SSF53300, 1 hit
SSF57535 SSF57535, 3 hits
PROSITEiView protein in PROSITE
PS50923 SUSHI, 3 hits
PS50240 TRYPSIN_DOM, 1 hit
PS00134 TRYPSIN_HIS, 1 hit
PS50234 VWFA, 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 nameiQ95IG1_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: Q95IG1
<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/TrEMBL: December 1, 2001
Last sequence update: December 1, 2001
Last modified: May 8, 2019
This is version 105 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 statusiUnreviewed (UniProtKB/TrEMBL)
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.
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