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GENE AND PROTEIN SUMMARY

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Gene name

LCK

Description

lymphocyte-specific protein tyrosine kinase

Protein class

Enzymes, Kinases, Mapped to UniProt SWISS-PROT, Mutated genes in cancer, Potential transmembrane proteins, SH2-domain containing proteins, SH3-domain containing proteins

Protein evidence

High

Entrez gene summary

This gene is a member of the Src family of protein tyrosine kinases (PTKs). The encoded protein is a key signaling molecule in the selection and maturation of developing T-cells. It contains N-terminal sites for myristylation and palmitylation, a PTK domain, and SH2 and SH3 domains which are involved in mediating protein-protein interactions with phosphotyrosine-containing and proline-rich motifs, respectively. The protein localizes to the plasma membrane and pericentrosomal vesicles, and binds to cell surface receptors, including CD4 and CD8, and other signaling molecules. Multiple alternatively spliced variants, encoding the same protein, have been described. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

9 in total
0 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nuclear membrane, Golgi apparatus

Additional location(s)

 

Staining summary

Localized to the Golgi apparatus or nuclear membrane.

Reliability (APE)

Very low

Antibodies in assay

HPA003494, CAB003816
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Selective cytoplasmic expression in lymphoid tissues.

Tissue specificity

Expressed in 10 out of 78 cell types

Reliability (APE)

High

Antibodies in assay

HPA003494, CAB003816
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 12
Respiratory (lung) 4
Cardiovascular 1
Female tissues 12
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 12
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 7% of the cancers

Antibodies in assay

HPA003494, CAB003816
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Level of antibody staining





Strong
Moderate
Weak
Negative

CELL LINE SUMMARY

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RNA evidence

Low
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA003494

CAB003816

HPA003494

CAB003816

A-431 Skin Low
StrongWeak
A-549 Lung Not detected
CACO-2 Colon Low
HEK 293 Embryonal kidney Low
HeLa Cervix Not detected
Hep-G2 Liver Low
MCF-7 Pleural effusion Not detected
PC-3 Bone marrow Low
RT-4 Urinary bladder Low
U-2 OS Bone Low
ModerateWeak
U-251 MG Brain Not detected
ModerateWeak

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA003494 pAb
CAB003816 mAb