Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Entry version 223 (13 Nov 2019)
Sequence version 4 (23 Jan 2007)
Previous versions | rss
Help videoAdd a publicationFeedback
Protein

Proto-oncogene tyrosine-protein kinase LCK

Gene

Lck

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

Non-receptor tyrosine-protein kinase that plays an essential role in the selection and maturation of developing T-cells in the thymus and in the function of mature T-cells. Plays a key role in T-cell antigen receptor (TCR)-linked signal transduction pathways. Constitutively associated with the cytoplasmic portions of the CD4 and CD8 surface receptors. Association of the TCR with a peptide antigen-bound MHC complex facilitates the interaction of CD4 and CD8 with MHC class II and class I molecules, respectively, thereby recruiting the associated LCK protein to the vicinity of the TCR/CD3 complex. LCK then phosphorylates tyrosine residues within the immunoreceptor tyrosine-based activation motifs (ITAM) of the cytoplasmic tails of the TCR-gamma chains and CD3 subunits, initiating the TCR/CD3 signaling pathway. Once stimulated, the TCR recruits the tyrosine kinase ZAP70, that becomes phosphorylated and activated by LCK. Following this, a large number of signaling molecules are recruited, ultimately leading to lymphokine production. LCK also contributes to signaling by other receptor molecules. Associates directly with the cytoplasmic tail of CD2, which leads to hyperphosphorylation and activation of LCK. Also plays a role in the IL2 receptor-linked signaling pathway that controls the T-cell proliferative response. Binding of IL2 to its receptor results in increased activity of LCK. Is expressed at all stages of thymocyte development and is required for the regulation of maturation events that are governed by both pre-TCR and mature alpha beta TCR. Phosphorylates other substrates including RUNX3, PTK2B/PYK2, the microtubule-associated protein MAPT, RHOH or TYROBP (By similarity). Interacts with UNC119; this interaction plays a crucial role in activation of LCK (By similarity).By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 <a href="http://www.uniprot.org/help/function_section">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

The relative activities of the inhibitory tyrosine-protein kinase CSK and the activating tyrosine-protein phosphatase PTPRC/CD45 determine the level of LCK activity. These interactions allow rapid and efficient activation of LCK in response to TCR stimulation (By similarity).By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei273ATPPROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei364Proton acceptorPROSITE-ProRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 bindingi251 – 259ATPPROSITE-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
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
2.7.10.2 3474

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-MMU-114604 GPVI-mediated activation cascade
R-MMU-1257604 PIP3 activates AKT signaling
R-MMU-1433557 Signaling by SCF-KIT
R-MMU-1433559 Regulation of KIT signaling
R-MMU-202424 Downstream TCR signaling
R-MMU-202427 Phosphorylation of CD3 and TCR zeta chains
R-MMU-202430 Translocation of ZAP-70 to Immunological synapse
R-MMU-202433 Generation of second messenger molecules
R-MMU-210990 PECAM1 interactions
R-MMU-2424491 DAP12 signaling
R-MMU-389356 CD28 co-stimulation
R-MMU-389357 CD28 dependent PI3K/Akt signaling
R-MMU-389359 CD28 dependent Vav1 pathway
R-MMU-389513 CTLA4 inhibitory signaling
R-MMU-389948 PD-1 signaling
R-MMU-6811558 PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling
R-MMU-9020558 Interleukin-2 signaling

<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:
Proto-oncogene tyrosine-protein kinase LCK (EC:2.7.10.2)
Alternative name(s):
Leukocyte C-terminal Src kinase
Short name:
LSK
Lymphocyte cell-specific protein-tyrosine kinase
p56-LCK
<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:Lck
Synonyms:Lsk-t
<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>OrganismiMus musculus (Mouse)
<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 identifieri10090 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
<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
  • UP000000589 <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: Chromosome 4

Organism-specific databases

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

More...
MGIi
MGI:96756 Lck

<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

<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 show a dramatic reduction in the level of peripheral T-cells, with 5-10% of wild-type levels. T-cells also exhibit a 10-fold decrease in proliferative response.1 Publication

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>Mutagenesisi2G → A: Abolishes myristoylation and palmitoylation. 1 Publication1
Mutagenesisi3 – 5CVC → SVK: Complete loss of interaction with CD4 or CD8. 1 Publication3
Mutagenesisi3C → S: Abolishes plasma membrane association; when associated with S-41. Reduced palmitoylation level. 2 Publications1
Mutagenesisi5C → K: Reduced palmitoylation level. 2 Publications1
Mutagenesisi5C → S: Abolishes plasma membrane association; when associated with S-21. 2 Publications1
Mutagenesisi20C → S: Complete loss of interaction with CD4 or CD8. 1 Publication1
Mutagenesisi23C → S: Complete loss of interaction with CD4 or CD8. 1 Publication1
Mutagenesisi269K → N: Reduced activity. 1
Mutagenesisi270V → L: Reduced activity. 1
Mutagenesisi271A → S: Reduced activity. 1
Mutagenesisi272V → A: Reduced activity. 1
Mutagenesisi273K → R: Loss of activity. 1 Publication1
Mutagenesisi274S → N: Reduced activity. 1
Mutagenesisi275L → M: Reduced activity. 1
Mutagenesisi276K → V: Reduced activity. 1
Mutagenesisi505Y → F: Causes thymic tumors. 2 Publications1

Keywords - Diseasei

Proto-oncogene

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...
ChEMBLi
CHEMBL2480

DrugCentral

More...
DrugCentrali
P06240

<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 <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemovedCurated
<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_00000881252 – 509Proto-oncogene tyrosine-protein kinase LCKAdd BLAST508

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position(s) and the type of covalently attached lipid group(s).<p><a href='/help/lipid' target='_top'>More...</a></p>Lipidationi2N-myristoyl glycine1 Publication1
Lipidationi3S-palmitoyl cysteine2 Publications1
Lipidationi5S-palmitoyl cysteine2 Publications1
<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 residuei102PhosphoserineBy similarity1
Modified residuei159PhosphothreonineBy similarity1
Modified residuei162PhosphoserineBy similarity1
Modified residuei192PhosphotyrosineCombined sources1
Modified residuei194PhosphoserineBy similarity1
Modified residuei394Phosphotyrosine; by autocatalysisBy similarity1
Modified residuei505Phosphotyrosine; by CSKBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">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

Autophosphorylated on Tyr-394, increasing enzymatic activity, this site is dephosphorylated by PTN22. Phosphorylated on Tyr-505 by CSK, decreasing activity. Dephosphorylated by PTPRC/CD45. Dephosphorylation at Tyr-394 by PTPN2 negatively regulates T-cells differentiation (By similarity).By similarity
Myristoylation is required prior to palmitoylation.2 Publications
Palmitoylation regulates subcellular location.By similarity

Keywords - PTMi

Lipoprotein, Myristate, Palmitate, Phosphoprotein

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
P06240

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
P06240

MaxQB - The MaxQuant DataBase

More...
MaxQBi
P06240

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

More...
PaxDbi
P06240

PRoteomics IDEntifications database

More...
PRIDEi
P06240

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P06240

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

More...
PhosphoSitePlusi
P06240

SwissPalm database of S-palmitoylation events

More...
SwissPalmi
P06240

<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

Present at a low level in most T-cells, and at an elevated level in LSTRA and Thy19 (T-cell lymphoma) 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

Levels remain relatively constant throughout T-cell ontogeny.

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSMUSG00000000409 Expressed in 161 organ(s), highest expression level in thymus

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
P06240 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
P06240 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_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

Binds to the cytoplasmic domain of cell surface receptors, such as AXL, CD2, CD4, CD5, CD8, CD44, CD45 and CD122. Also binds to effector molecules, such as PI4K, VAV1, RASA1, FYB1 and to other protein kinases including CDK1, RAF1, ZAP70 and SYK. Binds to phosphatidylinositol 3'-kinase (PI3K) from T-lymphocytes through its SH3 domain and to the tyrosine phosphorylated form of KHDRBS1/p70 through its SH2 domain.

Interacts with SQSTM1.

Interacts with phosphorylated LIME1.

Interacts with CBLB and PTPRH.

Interacts with RUNX3.

Forms a signaling complex with EPHA1, PTK2B AND PI3-KINASE; upon activation by EFNA1 which may regulate T-lymphocytes migration. Associates with ZAP70 and RHOH; these interactions allow LCK-mediated RHOH and CD3 subunit phosphorylation in the presence of functional ZAP70.

Interacts with CEACAM1 (via cytoplasmic domain); mediates CEACAM1 phosphorylation resulting in PTPN6 recruitment that dephosphorylates TCR stimulation-induced CD247 and ZAP70.

Interacts with FYB2 (By similarity).

Interacts with CD160.

By similarity

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">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="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
201120, 29 interactors

CORUM comprehensive resource of mammalian protein complexes

More...
CORUMi
P06240

The Eukaryotic Linear Motif resource for Functional Sites in Proteins

More...
ELMi
P06240

Protein interaction database and analysis system

More...
IntActi
P06240, 33 interactors

Molecular INTeraction database

More...
MINTi
P06240

STRING: functional protein association networks

More...
STRINGi
10090.ENSMUSP00000066209

Chemistry databases

BindingDB database of measured binding affinities

More...
BindingDBi
P06240

<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
P06240

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>Domaini61 – 121SH3PROSITE-ProRule annotationAdd BLAST61
Domaini127 – 224SH2PROSITE-ProRule annotationAdd BLAST98
Domaini245 – 498Protein kinasePROSITE-ProRule annotationAdd BLAST254

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>Regioni2 – 72Interactions with CD4 and CD8Add BLAST71
Regioni154 – 242Interaction with PTPRHBy similarityAdd BLAST89

<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 SH2 domain mediates interaction with SQSTM1. Interaction is regulated by Ser-59 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. SRC subfamily.PROSITE-ProRule annotation

Keywords - Domaini

SH2 domain, SH3 domain

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0197 Eukaryota
COG0515 LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000161163

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000233858

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P06240

KEGG Orthology (KO)

More...
KOi
K05856

Identification of Orthologs from Complete Genome Data

More...
OMAi
CGCSSNP

Database of Orthologous Groups

More...
OrthoDBi
539311at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P06240

TreeFam database of animal gene trees

More...
TreeFami
TF351634

Family and domain databases

Conserved Domains Database

More...
CDDi
cd10362 SH2_Src_Lck, 1 hit
cd12005 SH3_Lck, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.505.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011009 Kinase-like_dom_sf
IPR035850 Lck_SH2
IPR035749 Lck_SH3
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

Pfam protein domain database

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

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00401 SH2DOMAIN
PR00452 SH3DOMAIN
PR00109 TYRKINASE

Simple Modular Architecture Research Tool; a protein domain database

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

Superfamily database of structural and functional annotation

More...
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
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

<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.

<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 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.

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

P06240-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGCVCSSNPE DDWMENIDVC ENCHYPIVPL DSKISLPIRN GSEVRDPLVT
60 70 80 90 100
YEGSLPPASP LQDNLVIALH SYEPSHDGDL GFEKGEQLRI LEQSGEWWKA
110 120 130 140 150
QSLTTGQEGF IPFNFVAKAN SLEPEPWFFK NLSRKDAERQ LLAPGNTHGS
160 170 180 190 200
FLIRESESTA GSFSLSVRDF DQNQGEVVKH YKIRNLDNGG FYISPRITFP
210 220 230 240 250
GLHDLVRHYT NASDGLCTKL SRPCQTQKPQ KPWWEDEWEV PRETLKLVER
260 270 280 290 300
LGAGQFGEVW MGYYNGHTKV AVKSLKQGSM SPDAFLAEAN LMKQLQHPRL
310 320 330 340 350
VRLYAVVTQE PIYIITEYME NGSLVDFLKT PSGIKLNVNK LLDMAAQIAE
360 370 380 390 400
GMAFIEEQNY IHRDLRAANI LVSDTLSCKI ADFGLARLIE DNEYTAREGA
410 420 430 440 450
KFPIKWTAPE AINYGTFTIK SDVWSFGILL TEIVTHGRIP YPGMTNPEVI
460 470 480 490 500
QNLERGYRMV RPDNCPEELY HLMMLCWKER PEDRPTFDYL RSVLDDFFTA

TEGQYQPQP
Length:509
Mass (Da):57,943
Last modified:January 23, 2007 - v4
<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:i3513102F49A7FD0B
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
E9Q696E9Q696_MOUSE
Tyrosine-protein kinase
Lck
520Annotation 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>
B2KG65B2KG65_MOUSE
Proto-oncogene tyrosine-protein kin...
Lck
92Annotation 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>

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
M12056 mRNA Translation: AAB59674.1
X03533 mRNA Translation: CAA27234.1
X03533 mRNA Translation: CAA27235.1 Sequence problems.
X03533 mRNA Translation: CAA27236.1 Sequence problems.
AK088001 mRNA Translation: BAC40086.1
BC011474 mRNA Translation: AAH11474.1
M21511 Genomic DNA Translation: AAA39422.1 Sequence problems.
M18098 Genomic DNA Translation: AAA39421.1

The Consensus CDS (CCDS) project

More...
CCDSi
CCDS18697.1

Protein sequence database of the Protein Information Resource

More...
PIRi
I48845

NCBI Reference Sequences

More...
RefSeqi
NP_001155905.1, NM_001162433.1
NP_034823.1, NM_010693.3
XP_006502881.1, XM_006502818.3

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSMUST00000067240; ENSMUSP00000066209; ENSMUSG00000000409
ENSMUST00000102596; ENSMUSP00000099656; ENSMUSG00000000409

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
16818

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
mmu:16818

UCSC genome browser

More...
UCSCi
uc008uxi.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
M12056 mRNA Translation: AAB59674.1
X03533 mRNA Translation: CAA27234.1
X03533 mRNA Translation: CAA27235.1 Sequence problems.
X03533 mRNA Translation: CAA27236.1 Sequence problems.
AK088001 mRNA Translation: BAC40086.1
BC011474 mRNA Translation: AAH11474.1
M21511 Genomic DNA Translation: AAA39422.1 Sequence problems.
M18098 Genomic DNA Translation: AAA39421.1
CCDSiCCDS18697.1
PIRiI48845
RefSeqiNP_001155905.1, NM_001162433.1
NP_034823.1, NM_010693.3
XP_006502881.1, XM_006502818.3

3D structure databases

SMRiP06240
ModBaseiSearch...

Protein-protein interaction databases

BioGridi201120, 29 interactors
CORUMiP06240
ELMiP06240
IntActiP06240, 33 interactors
MINTiP06240
STRINGi10090.ENSMUSP00000066209

Chemistry databases

BindingDBiP06240
ChEMBLiCHEMBL2480
DrugCentraliP06240

PTM databases

iPTMnetiP06240
PhosphoSitePlusiP06240
SwissPalmiP06240

Proteomic databases

EPDiP06240
jPOSTiP06240
MaxQBiP06240
PaxDbiP06240
PRIDEiP06240

Genome annotation databases

EnsembliENSMUST00000067240; ENSMUSP00000066209; ENSMUSG00000000409
ENSMUST00000102596; ENSMUSP00000099656; ENSMUSG00000000409
GeneIDi16818
KEGGimmu:16818
UCSCiuc008uxi.2 mouse

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
3932
MGIiMGI:96756 Lck

Phylogenomic databases

eggNOGiKOG0197 Eukaryota
COG0515 LUCA
GeneTreeiENSGT00940000161163
HOGENOMiHOG000233858
InParanoidiP06240
KOiK05856
OMAiCGCSSNP
OrthoDBi539311at2759
PhylomeDBiP06240
TreeFamiTF351634

Enzyme and pathway databases

BRENDAi2.7.10.2 3474
ReactomeiR-MMU-114604 GPVI-mediated activation cascade
R-MMU-1257604 PIP3 activates AKT signaling
R-MMU-1433557 Signaling by SCF-KIT
R-MMU-1433559 Regulation of KIT signaling
R-MMU-202424 Downstream TCR signaling
R-MMU-202427 Phosphorylation of CD3 and TCR zeta chains
R-MMU-202430 Translocation of ZAP-70 to Immunological synapse
R-MMU-202433 Generation of second messenger molecules
R-MMU-210990 PECAM1 interactions
R-MMU-2424491 DAP12 signaling
R-MMU-389356 CD28 co-stimulation
R-MMU-389357 CD28 dependent PI3K/Akt signaling
R-MMU-389359 CD28 dependent Vav1 pathway
R-MMU-389513 CTLA4 inhibitory signaling
R-MMU-389948 PD-1 signaling
R-MMU-6811558 PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling
R-MMU-9020558 Interleukin-2 signaling

Miscellaneous databases

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

More...
ChiTaRSi
Lck mouse

Protein Ontology

More...
PROi
PR:P06240

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSMUSG00000000409 Expressed in 161 organ(s), highest expression level in thymus
ExpressionAtlasiP06240 baseline and differential
GenevisibleiP06240 MM

Family and domain databases

CDDicd10362 SH2_Src_Lck, 1 hit
cd12005 SH3_Lck, 1 hit
Gene3Di3.30.505.10, 1 hit
InterProiView protein in InterPro
IPR011009 Kinase-like_dom_sf
IPR035850 Lck_SH2
IPR035749 Lck_SH3
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
PfamiView protein in Pfam
PF07714 Pkinase_Tyr, 1 hit
PF00017 SH2, 1 hit
PF00018 SH3_1, 1 hit
PRINTSiPR00401 SH2DOMAIN
PR00452 SH3DOMAIN
PR00109 TYRKINASE
SMARTiView protein in SMART
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
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

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 nameiLCK_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: P06240
Secondary accession number(s): Q61794
, Q61795, Q62320, Q91X65
<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: January 1, 1988
Last sequence update: January 23, 2007
Last modified: November 13, 2019
This is version 223 of the entry and version 4 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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Human and mouse protein kinases
    Human and mouse protein kinases: classification and index
  3. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again