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GENE AND PROTEIN SUMMARY

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Gene name

CHKB

Description

choline kinase beta

Protein class

Enzymes, Mapped to UniProt SWISS-PROT, Potential transmembrane proteins

Protein evidence

Medium

Entrez gene summary

Choline kinase (CK) and ethanolamine kinase (EK) catalyze the phosphorylation of choline/ethanolamine to phosphocholine/phosphoethanolamine. This is the first enzyme in the biosynthesis of phosphatidylcholine/phosphatidylethanolamine in all animal cells. The highly purified CKs from mammalian sources and their recombinant gene products have been shown to have EK activity also, indicating that both activities reside on the same protein. The choline kinase-like protein encoded by CHKL belongs to the choline/ethanolamine kinase family; however, its exact function is not known. Read-through transcripts are expressed from this locus that include exons from the downstream CPT1B locus. [provided by RefSeq, Jun 2009]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Cytoplasm

Additional location(s)

 

Staining summary

Staining of cytoplasm in all three cell lines.

Reliability (Single)

Antibodies in assay

HPA018797
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Most of the normal tissues displayed moderate cytoplasmic positivity. Strong staining was seen in exocrine pancreas, thyroid gland, placenta and smooth muscle cells. Hepatocytes in liver and glial cells in the CNS were generally negative.

Tissue specificity

Staining in 71 out of 81 cell types

Reliability (Single)

Antibodies in assay

HPA018797
 

Organ

No of cell types

Antibody staining

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 13
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 83% of the cancers

Antibodies in assay

HPA018797
 

Tissue

Cancer staining

Normal tissue
staining

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

Tissue

Cancer staining

Normal tissue
staining

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

High
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA018797

HPA018797

A-431 Skin Medium
Weak
A-549 Lung Medium
CACO-2 Colon Medium
HEK 293 Embryonal kidney High
HeLa Cervix High
Hep-G2 Liver Medium
MCF-7 Pleural effusion High
PC-3 Bone marrow Medium
RT-4 Urinary bladder High
U-2 OS Bone Medium
Moderate
U-251 MG Brain Medium
Moderate

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA018797 pAb