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Entry version 96 (11 Dec 2019)
Sequence version 1 (01 Oct 1996)
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Protein

Integrin alpha-IIb

Gene

ITGA2B

Organism
Papio cynocephalus (Yellow baboon)
Status
Reviewed-Annotation score:

Annotation score:4 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 transcript 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

Integrin alpha-IIb/beta-3 is a receptor for fibronectin, fibrinogen, plasminogen, prothrombin, thrombospondin and vitronectin. It recognizes the sequence R-G-D in a wide array of ligands. It recognizes the sequence H-H-L-G-G-G-A-K-Q-A-G-D-V in fibrinogen gamma chain. Following activation integrin alpha-IIb/beta-3 brings about platelet/platelet interaction through binding of soluble fibrinogen. This step leads to rapid platelet aggregation which physically plugs ruptured endothelial cell surface.

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section specifies the position(s) of the calcium-binding region(s) within the protein. One common calcium-binding motif is the EF-hand, but other calcium-binding motifs also exist.<p><a href='/help/ca_bind' target='_top'>More...</a></p>Calcium bindingi22 – 30Sequence analysis9

<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 functionIntegrin, Receptor
Biological processCell adhesion
LigandCalcium, Metal-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%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
Recommended name:
Integrin alpha-IIb
Alternative name(s):
GPalpha IIb
Short name:
GPIIb
Platelet membrane glycoprotein IIb
CD_antigen: CD41
Cleaved into the following 2 chains:
<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:ITGA2B
<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>OrganismiPapio cynocephalus (Yellow baboon)
<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 identifieri9556 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniCercopithecidaeCercopithecinaePapio

<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 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 domaini‹1 – 558ExtracellularSequence analysisAdd BLAST›558
<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>Transmembranei559 – 584HelicalSequence analysisAdd BLAST26
Topological domaini585 – 604CytoplasmicSequence analysisAdd BLAST20

Keywords - Cellular componenti

Membrane

<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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_0000016281‹1 – 467Integrin alpha-IIb heavy chainAdd BLAST›467
ChainiPRO_0000016282468 – 604Integrin alpha-IIb light chainAdd BLAST137

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 bondi69 ↔ 80By similarity
Disulfide bondi86 ↔ 141By similarity
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">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>Glycosylationi166N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi198 ↔ 204By similarity
Disulfide bondi270 ↔ 283By similarity
Glycosylationi276N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi422 ↔ 476Interchain (between heavy and light chains)By similarity
Disulfide bondi481 ↔ 486By similarity
Glycosylationi527N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
P53711

<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%5Fsection">'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%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Heterodimer of an alpha and a beta subunit. The alpha subunit is composed of a heavy and a light chain linked by a disulfide bond. Alpha-IIb associates with beta-3. Directly interacts with RNF181.

Interacts (via C-terminus cytoplasmic tail region) with CIB1; the interaction is direct and calcium-dependent.

Interacts (via C-terminus cytoplasmic tail region) with CIB2, CIB3 and CIB4; the interactions are stabilized/increased in a calcium and magnesium-dependent manner (By similarity).

By similarity

<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

3D structure databases

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

More...
SMRi
P53711

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 'Family and Domains' section indicates the positions and types of repeated sequence motifs or repeated domains within the protein.<p><a href='/help/repeat' target='_top'>More...</a></p>Repeati1 – 61FG-GAPPROSITE-ProRule annotationAdd BLAST61

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi587 – 591GFFKR motif5

<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 integrin alpha chain family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.130.10.130, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR013519, Int_alpha_beta-p
IPR000413, Integrin_alpha
IPR013649, Integrin_alpha-2
IPR018184, Integrin_alpha_C_CS
IPR028994, Integrin_alpha_N
IPR032695, Integrin_dom_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00357, Integrin_alpha, 1 hit
PF08441, Integrin_alpha2, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR01185, INTEGRINA

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00191, Int_alpha, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF69179, SSF69179, 3 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51470, FG_GAP, 1 hit
PS00242, INTEGRIN_ALPHA, 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: Fragment.

<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 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.

P53711-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
QVLDSPFPTG SAFGFSLRGA VDIDDNGYPD LIVGAYGANQ VAVYRAQPVV
60 70 80 90 100
KASVQLLVQD SLNPAVKSCV LPQTKTPVSC FKIQMCVGAT GHNIPQKLSL
110 120 130 140 150
NAELQLDRQK PRQGRRVLLL GSQQAGTTLN LDLGGKHSPI CHTTMAFLRD
160 170 180 190 200
EADIRDKLSP IVLSLNVSLP PTEAGMAPAV VLHGDTHVQE QTRIVLDCGE
210 220 230 240 250
DDVCVPQLQL TASVTGSPLL VGADNVLELQ MDTANEGEGA YEAELAVHLP
260 270 280 290 300
QGAHYMRARS NVEGFERLIC NQKKENETRV VLCELGNPMK KNTQIGIAML
310 320 330 340 350
VSVGNLEEAG ESVSFQLQIR SKNSQNPNSK IVLLDVPVRA EAQVELRGNS
360 370 380 390 400
FPASLVVAAE EGDREQNSLD SWGPKVEHTY ELHNNGPGTV NGLHLSIHLP
410 420 430 440 450
GQSQHSDLLY ILDIQPQGGL QCFPQPPVNP LKVDWGLPTP SPSPVHPAHH
460 470 480 490 500
KRDRRQIFLP EPEQPSRLQD PVLVSCDSAP CTVVQCDLQE MARGQRAMVT
510 520 530 540 550
VLAFLWLPSL HQRPLDQFVL QSQAWFNVSS LPYAVPPLSL PRGEAQVRTQ
560 570 580 590 600
LLRALEERAI PIWWVLVGVL GGLLLLTILV LAMWKVGFFK RNRPPLEEDD

EEGE
Length:604
Mass (Da):66,066
Last modified:October 1, 1996 - 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:i0B13BD1BD9E37F88
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 residuei11

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
L12233 mRNA Translation: AAA65936.1

Protein sequence database of the Protein Information Resource

More...
PIRi
I36917

<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
L12233 mRNA Translation: AAA65936.1
PIRiI36917

3D structure databases

SMRiP53711
ModBaseiSearch...

Proteomic databases

PRIDEiP53711

Family and domain databases

Gene3Di2.130.10.130, 1 hit
InterProiView protein in InterPro
IPR013519, Int_alpha_beta-p
IPR000413, Integrin_alpha
IPR013649, Integrin_alpha-2
IPR018184, Integrin_alpha_C_CS
IPR028994, Integrin_alpha_N
IPR032695, Integrin_dom_sf
PfamiView protein in Pfam
PF00357, Integrin_alpha, 1 hit
PF08441, Integrin_alpha2, 1 hit
PRINTSiPR01185, INTEGRINA
SMARTiView protein in SMART
SM00191, Int_alpha, 1 hit
SUPFAMiSSF69179, SSF69179, 3 hits
PROSITEiView protein in PROSITE
PS51470, FG_GAP, 1 hit
PS00242, INTEGRIN_ALPHA, 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 nameiITA2B_PAPCY
<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: P53711
<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/Swiss-Prot: October 1, 1996
Last sequence update: October 1, 1996
Last modified: December 11, 2019
This is version 96 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

<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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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