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Entry version 203 (12 Aug 2020)
Sequence version 1 (01 Feb 1995)
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Protein

Tyrosine-protein kinase ITK/TSK

Gene

Itk

Organism
Mus musculus (Mouse)
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

Tyrosine kinase that plays an essential role in regulation of the adaptive immune response. Regulates the development, function and differentiation of conventional T-cells and nonconventional NKT-cells. When antigen presenting cells (APC) activate T-cell receptor (TCR), a series of phosphorylation lead to the recruitment of ITK to the cell membrane, in the vicinity of the stimulated TCR receptor, where it is phosphorylated by LCK. Phosphorylation leads to ITK autophosphorylation and full activation. Once activated, phosphorylates PLCG1, leading to the activation of this lipase and subsequent cleavage of its substrates. In turn, the endoplasmic reticulum releases calcium in the cytoplasm and the nuclear activator of activated T-cells (NFAT) translocates into the nucleus to perform its transcriptional duty. Phosphorylates 2 essential adapter proteins: the linker for activation of T-cells/LAT protein and LCP2. Then, a large number of signaling molecules such as VAV1 are recruited and ultimately lead to lymphokine production, T-cell proliferation and differentiation. Required for TCR-mediated calcium response in gamma-delta T-cells, may also be involved in the modulation of the transcriptomic signature in the Vgamma2-positive subset of immature gamma-delta T-cells (PubMed:23562159). Phosphorylates TBX21 at 'Tyr-525' and mediates its interaction with GATA3 (PubMed:15662016).3 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Zn2+By similarityNote: Binds 1 zinc ion per subunit.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi127ZincBy similarity1
Metal bindingi138ZincBy similarity1
Metal bindingi139ZincBy similarity1
Metal bindingi149ZincBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei396ATPPROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei487Proton acceptorPROSITE-ProRule annotation1

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) and type(s) of zinc fingers within the protein.<p><a href='/help/zn_fing' target='_top'>More...</a></p>Zinc fingeri119 – 155Btk-typePROSITE-ProRule annotationAdd BLAST37
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi374 – 382ATPPROSITE-ProRule annotation9

<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 functionKinase, Transferase, Tyrosine-protein kinase
Biological processAdaptive immunity, Immunity
LigandATP-binding, Metal-binding, Nucleotide-binding, Zinc

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
2.7.10.1, 3474
2.7.10.2, 3474

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-MMU-202433, Generation of second messenger molecules
R-MMU-2871809, FCERI mediated Ca+2 mobilization

<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:
Tyrosine-protein kinase ITK/TSK (EC:2.7.10.2)
Alternative name(s):
IL-2-inducible T-cell kinase
Kinase EMT
Kinase TLK
T-cell-specific kinase
<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:Itk
Synonyms:Emt, Tlk, Tsk
<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>OrganismiMus musculus (Mouse)
<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 identifieri10090 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
<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
  • UP000000589 <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 11

Organism-specific databases

Mouse genome database (MGD) from Mouse Genome Informatics (MGI)

More...
MGIi
MGI:96621, Itk

<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

Cytoplasm, Nucleus

<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 describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Mice display decreased mature thymocytes and elicit profound defect in CD4+ and CD8+ T-cell development (PubMed:8777721, PubMed:10213685, PubMed:16860760, PubMed:21036902). Additionally, they show a strong decrease of cytokine production in response to TCR receptor stimulation (PubMed:21036902). Impaired TCR-mediated calcium response in gamma-delta T-cells (PubMed:23562159). Loss of Vgamma2-positive immature thymocyte-specific transcriptomic profile, although there is no change to overall transcription factor expression levels (PubMed:23562159). Not required for the generation of IL17A expressing gamma-delta T-cells (PubMed:23562159).5 Publications

<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_00000881071 – 625Tyrosine-protein kinase ITK/TSKAdd BLAST625

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 residuei186Phosphotyrosine; by autocatalysisBy similarity1
Modified residuei517Phosphotyrosine; by LCKBy similarity1
Modified residuei570PhosphoserineBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Phosphorylated at Tyr-517 in the activation loop of the kinase domain by LCK. Subsequent autophosphorylation at Tyr-186 leads to the kinase activation. The autophosphorylated Tyr-186 lies within the substrate binding sequence of the SH3 domain (By similarity).By similarity
Ubiquitinated.By similarity

Keywords - PTMi

Phosphoprotein, Ubl conjugation

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
Q03526

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
Q03526

MaxQB - The MaxQuant DataBase

More...
MaxQBi
Q03526

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

More...
PaxDbi
Q03526

PRoteomics IDEntifications database

More...
PRIDEi
Q03526

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

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iPTMneti
Q03526

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

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PhosphoSitePlusi
Q03526

<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

Is detected in the thymus, lymph node and very faintly in the spleen, but is not detected in the liver, lung, kidney, heart, brain, intestine or testis. Expressed in T-lymphocytes and mast cells. It may also be expressed in natural killer cells.

<p>This subsection of the 'Expression' section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified 'at the protein level'.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

Is present in the fetal thymus as early as day 14 of gestation. The levels are 5- to 10-fold higher in thymocytes than in peripheral T-cells, and increase in the thymus during development from neonate to adult.

<p>This subsection of the 'Expression' section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Through a myriad of surface receptors including the TCR/CD3 signaling complex, coreceptors, or chemokine receptors.

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSMUSG00000020395, Expressed in thymus and 107 other tissues

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q03526, baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q03526, MM

<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

Homooligomerizes; this association negatively regulates kinase activity.

Interacts with PPIA/CYPA; this interaction regulates TCR signal strength via a proline-directed conformational switch in ITK.

Interacts with THEMIS (By similarity).

Interacts with FASLG.

Interacts with VAV1; this interaction is important for VAV1 localization and TCR-induced actin polarization.

Interacts with TBX21 (PubMed:15662016).

By similarity3 Publications

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection">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="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
200840, 5 interactors

Database of interacting proteins

More...
DIPi
DIP-29283N

Protein interaction database and analysis system

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IntActi
Q03526, 8 interactors

Molecular INTeraction database

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MINTi
Q03526

STRING: functional protein association networks

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STRINGi
10090.ENSMUSP00000104860

Miscellaneous databases

RNAct, Protein-RNA interaction predictions for model organisms.

More...
RNActi
Q03526, protein

<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

1625
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

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SMRi
Q03526

Database of comparative protein structure models

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ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

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EvolutionaryTracei
Q03526

<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>Domaini4 – 117PHPROSITE-ProRule annotationAdd BLAST114
Domaini177 – 237SH3PROSITE-ProRule annotationAdd BLAST61
Domaini245 – 343SH2PROSITE-ProRule annotationAdd BLAST99
Domaini368 – 620Protein kinasePROSITE-ProRule annotationAdd BLAST253

<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

The N-terminal PH domain allows ITK to be recruited to the plasma membrane by an activated PI3 kinase. This domain contains also a proline-rich region (PRR). The adjoining domain is a SH3 domain, which binds to PRR (from itself or from other proteins). Next, a SH2 domain is required for binding tyrosine-phosphorylated substrates. In the C-terminal region, the kinase domain is required for tyrosine phosphorylation (By similarity).By similarity

<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 protein kinase superfamily. Tyr protein kinase family. TEC subfamily.PROSITE-ProRule annotation

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri119 – 155Btk-typePROSITE-ProRule annotationAdd BLAST37

Keywords - Domaini

SH2 domain, SH3 domain, Zinc-finger

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

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eggNOGi
KOG0197, Eukaryota

Ensembl GeneTree

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GeneTreei
ENSGT00940000158850

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q03526

KEGG Orthology (KO)

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KOi
K07363

Database of Orthologous Groups

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OrthoDBi
1047190at2759

Database for complete collections of gene phylogenies

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PhylomeDBi
Q03526

TreeFam database of animal gene trees

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TreeFami
TF351634

Family and domain databases

Conserved Domains Database

More...
CDDi
cd05112, PTKc_Itk, 1 hit
cd11908, SH3_ITK, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

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Gene3Di
2.30.29.30, 1 hit
3.30.505.10, 1 hit

Intrinsically Disordered proteins with Extensive Annotations and Literature

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IDEALi
IID50118

Integrated resource of protein families, domains and functional sites

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InterProi
View protein in InterPro
IPR042785, ITK_PTKc
IPR035583, ITK_SH3
IPR011009, Kinase-like_dom_sf
IPR011993, PH-like_dom_sf
IPR001849, PH_domain
IPR000719, Prot_kinase_dom
IPR017441, Protein_kinase_ATP_BS
IPR001245, Ser-Thr/Tyr_kinase_cat_dom
IPR000980, SH2
IPR036860, SH2_dom_sf
IPR036028, SH3-like_dom_sf
IPR001452, SH3_domain
IPR008266, Tyr_kinase_AS
IPR020635, Tyr_kinase_cat_dom
IPR001562, Znf_Btk_motif

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00779, BTK, 1 hit
PF00169, PH, 1 hit
PF07714, Pkinase_Tyr, 1 hit
PF00017, SH2, 1 hit
PF00018, SH3_1, 1 hit

Protein Motif fingerprint database; a protein domain database

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PRINTSi
PR00401, SH2DOMAIN
PR00402, TECBTKDOMAIN
PR00109, TYRKINASE

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00107, BTK, 1 hit
SM00233, PH, 1 hit
SM00252, SH2, 1 hit
SM00326, SH3, 1 hit
SM00219, TyrKc, 1 hit

Superfamily database of structural and functional annotation

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SUPFAMi
SSF50044, SSF50044, 1 hit
SSF55550, SSF55550, 1 hit
SSF56112, SSF56112, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50003, PH_DOMAIN, 1 hit
PS00107, PROTEIN_KINASE_ATP, 1 hit
PS50011, PROTEIN_KINASE_DOM, 1 hit
PS00109, PROTEIN_KINASE_TYR, 1 hit
PS50001, SH2, 1 hit
PS50002, SH3, 1 hit
PS51113, ZF_BTK, 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>Sequence (1+)i

<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.

This entry has 1 described isoform and 2 potential isoforms that are computationally mapped.Show allAlign All

Q03526-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNNFILLEEQ LIKKSQQKRR TSPSNFKVRF FVLTKASLAY FEDRHGKKRT
60 70 80 90 100
LKGSIELSRI KCVEIVKSDI SIPCHYKYPF QTLVYLQVVH DNYLLYVFAP
110 120 130 140 150
DCESRQRWVL TLKEETRNNN SLVSKYHPNF WMDGRWRCCS QLEKPAVGCA
160 170 180 190 200
PYDPSKNASK KPLPPTPEDN RRSFQEPEET LVIALYDYQT NDPQELALRC
210 220 230 240 250
DEEYYLLDSS EIHWWRVQDK NGHEGYAPSS YLVEKSPNNL ETYEWYNKSI
260 270 280 290 300
SRDKAEKLLL DTGKEGAFMV RDSRTPGTYT VSVFTKAIIS ENPCIKHYHI
310 320 330 340 350
KETNDSPKRY YVAEKYVFDS IPLLIQYHQY NGGGLVTRLR YPVCSWRQKA
360 370 380 390 400
PVTAGLRYGK WVIQPSELTF VQEIGSGQFG LVHLGYWLNK DKVAIKTIQE
410 420 430 440 450
GAMSEEDFIE EAEVMMKLSH PKLVQLYGVC LEQAPICLVF EFMEHGCLSD
460 470 480 490 500
YLRSQRGLFA AETLLGMCLD VCEGMAYLEK ACVIHRDLAA RNCLVGENQV
510 520 530 540 550
IKVSDFGMTR FVLDDQYTSS TGTKFPVKWA SPEVFSFSRY SSKSDVWSFG
560 570 580 590 600
VLMWEVFSEG KIPYENRSNS EVVEDISTGF RLYKPRLASC HVYQIMNHCW
610 620
KEKPEDRPPF SQLLSQLAEI AEAGL
Length:625
Mass (Da):72,292
Last modified:February 1, 1995 - 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:iF7A4A18A8A1AADDC
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 2 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
Q5STT8Q5STT8_MOUSE
Tyrosine-protein kinase
Itk
619Annotation 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>
Q5STT7Q5STT7_MOUSE
Tyrosine-protein kinase ITK/TSK
Itk
264Annotation 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 conflicti82 – 87Missing (PubMed:8421704).Curated6
Sequence conflicti82 – 87Missing (PubMed:8476425).Curated6
Sequence conflicti82 – 87Missing (Ref. 4) Curated6
Sequence conflicti535F → S in L10628 (PubMed:8476425).Curated1
Sequence conflicti540Y → C in L10628 (PubMed:8476425).Curated1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
L00619 mRNA Translation: AAA39337.1
L05631 mRNA Translation: AAA40518.1
L10628 mRNA No translation available.
D14042 mRNA Translation: BAA03129.1

The Consensus CDS (CCDS) project

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CCDSi
CCDS70169.1

Protein sequence database of the Protein Information Resource

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PIRi
A43030

NCBI Reference Sequences

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RefSeqi
NP_001268894.1, NM_001281965.1
NP_001268895.1, NM_001281966.1
NP_001268897.1, NM_001281968.1
NP_034713.2, NM_010583.3

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSMUST00000109237; ENSMUSP00000104860; ENSMUSG00000020395

Database of genes from NCBI RefSeq genomes

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GeneIDi
16428

KEGG: Kyoto Encyclopedia of Genes and Genomes

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KEGGi
mmu:16428

UCSC genome browser

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UCSCi
uc011xtn.2, mouse

<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
L00619 mRNA Translation: AAA39337.1
L05631 mRNA Translation: AAA40518.1
L10628 mRNA No translation available.
D14042 mRNA Translation: BAA03129.1
CCDSiCCDS70169.1
PIRiA43030
RefSeqiNP_001268894.1, NM_001281965.1
NP_001268895.1, NM_001281966.1
NP_001268897.1, NM_001281968.1
NP_034713.2, NM_010583.3

3D structure databases

Select the link destinations:

Protein Data Bank Europe

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PDBei

Protein Data Bank RCSB

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RCSB PDBi

Protein Data Bank Japan

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PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1AWJNMR-A160-236[»]
1LUINMR-A238-344[»]
1LUKNMR-A238-344[»]
1LUMNMR-A238-344[»]
1LUNNMR-A238-344[»]
2ETZNMR-A238-344[»]
2EU0NMR-A238-344[»]
2K79NMR-A177-237[»]
B238-344[»]
2K7ANMR-A177-237[»]
B238-344[»]
2RN8NMR-A177-238[»]
2RNANMR-A177-238[»]
3S9KX-ray2.35A236-344[»]
SMRiQ03526
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGRIDi200840, 5 interactors
DIPiDIP-29283N
IntActiQ03526, 8 interactors
MINTiQ03526
STRINGi10090.ENSMUSP00000104860

PTM databases

iPTMnetiQ03526
PhosphoSitePlusiQ03526

Proteomic databases

EPDiQ03526
jPOSTiQ03526
MaxQBiQ03526
PaxDbiQ03526
PRIDEiQ03526

Protocols and materials databases

Antibodypedia a portal for validated antibodies

More...
Antibodypediai
16533, 486 antibodies

Genome annotation databases

EnsembliENSMUST00000109237; ENSMUSP00000104860; ENSMUSG00000020395
GeneIDi16428
KEGGimmu:16428
UCSCiuc011xtn.2, mouse

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
3702
MGIiMGI:96621, Itk

Phylogenomic databases

eggNOGiKOG0197, Eukaryota
GeneTreeiENSGT00940000158850
InParanoidiQ03526
KOiK07363
OrthoDBi1047190at2759
PhylomeDBiQ03526
TreeFamiTF351634

Enzyme and pathway databases

BRENDAi2.7.10.1, 3474
2.7.10.2, 3474
ReactomeiR-MMU-202433, Generation of second messenger molecules
R-MMU-2871809, FCERI mediated Ca+2 mobilization

Miscellaneous databases

BioGRID ORCS database of CRISPR phenotype screens

More...
BioGRID-ORCSi
16428, 0 hits in 18 CRISPR screens

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

More...
ChiTaRSi
Itk, mouse
EvolutionaryTraceiQ03526

Protein Ontology

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PROi
PR:Q03526
RNActiQ03526, protein

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSMUSG00000020395, Expressed in thymus and 107 other tissues
ExpressionAtlasiQ03526, baseline and differential
GenevisibleiQ03526, MM

Family and domain databases

CDDicd05112, PTKc_Itk, 1 hit
cd11908, SH3_ITK, 1 hit
Gene3Di2.30.29.30, 1 hit
3.30.505.10, 1 hit
IDEALiIID50118
InterProiView protein in InterPro
IPR042785, ITK_PTKc
IPR035583, ITK_SH3
IPR011009, Kinase-like_dom_sf
IPR011993, PH-like_dom_sf
IPR001849, PH_domain
IPR000719, Prot_kinase_dom
IPR017441, Protein_kinase_ATP_BS
IPR001245, Ser-Thr/Tyr_kinase_cat_dom
IPR000980, SH2
IPR036860, SH2_dom_sf
IPR036028, SH3-like_dom_sf
IPR001452, SH3_domain
IPR008266, Tyr_kinase_AS
IPR020635, Tyr_kinase_cat_dom
IPR001562, Znf_Btk_motif
PfamiView protein in Pfam
PF00779, BTK, 1 hit
PF00169, PH, 1 hit
PF07714, Pkinase_Tyr, 1 hit
PF00017, SH2, 1 hit
PF00018, SH3_1, 1 hit
PRINTSiPR00401, SH2DOMAIN
PR00402, TECBTKDOMAIN
PR00109, TYRKINASE
SMARTiView protein in SMART
SM00107, BTK, 1 hit
SM00233, PH, 1 hit
SM00252, SH2, 1 hit
SM00326, SH3, 1 hit
SM00219, TyrKc, 1 hit
SUPFAMiSSF50044, SSF50044, 1 hit
SSF55550, SSF55550, 1 hit
SSF56112, SSF56112, 1 hit
PROSITEiView protein in PROSITE
PS50003, PH_DOMAIN, 1 hit
PS00107, PROTEIN_KINASE_ATP, 1 hit
PS50011, PROTEIN_KINASE_DOM, 1 hit
PS00109, PROTEIN_KINASE_TYR, 1 hit
PS50001, SH2, 1 hit
PS50002, SH3, 1 hit
PS51113, ZF_BTK, 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 nameiITK_MOUSE
<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: Q03526
<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: February 1, 1995
Last sequence update: February 1, 1995
Last modified: August 12, 2020
This is version 203 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

Keywords - Technical termi

3D-structure, Reference proteome

Documents

  1. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
  4. Human and mouse protein kinases
    Human and mouse protein kinases: classification and index
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