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GENE AND PROTEIN SUMMARY

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Gene name

BLNK

Description

B-cell linker

Protein class

Mapped to UniProt SWISS-PROT, SH2-domain containing proteins

Protein evidence

High

Entrez gene summary

This gene encodes a cytoplasmic linker or adaptor protein that plays a critical role in B cell development. This protein bridges B cell receptor-associated kinase activation with downstream signaling pathways, thereby affecting various biological functions. The phosphorylation of five tyrosine residues is necessary for this protein to nucleate distinct signaling effectors following B cell receptor activation. Mutations in this gene cause hypoglobulinemia and absent B cells, a disease in which the pro- to pre-B-cell transition is developmentally blocked. Deficiency in this protein has also been shown in some cases of pre-B acute lymphoblastic leukemia. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, May 2012]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleoli

Additional location(s)

 

Staining summary

Staining of nucleoli in all three cell lines.

Reliability (Single)

Antibodies in assay

HPA038309
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Distinct cytoplasmic expression in subsets of lymphoid cells. Lower expression observed in several other tissues.

Tissue specificity

Expressed in 52 out of 82 cell types

Reliability (APE)

High

Antibodies in assay

CAB009333, CAB016291, HPA038309, HPA038310
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 13
Respiratory (lung) 4
Cardiovascular 1
Female tissues 13
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 14
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 52% of the cancers

Antibodies in assay

CAB009333, CAB016291, HPA038309, HPA038310
 

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

Medium
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

CAB009333

CAB016291

HPA038309

HPA038310

HPA038309

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB009333 pAb
CAB016291 mAb
HPA038309 pAb
HPA038310 pAb