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GENE AND PROTEIN SUMMARY

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Gene name

CREB1

Description

cAMP responsive element binding protein 1

Protein class

Mapped to UniProt SWISS-PROT, Mutated genes in cancer, Potential transmembrane proteins, Transcription factors

Protein evidence

High

Entrez gene summary

This gene encodes a transcription factor that is a member of the leucine zipper family of DNA binding proteins. This protein binds as a homodimer to the cAMP-responsive element, an octameric palindrome. The protein is phosphorylated by several protein kinases, and induces transcription of genes in response to hormonal stimulation of the cAMP pathway. Alternate splicing of this gene results in two transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus but not nucleoli

Additional location(s)

 

Staining summary

Localized to the nucleus.

Reliability (APE)

High

Antibodies in assay

CAB003803, HPA019150
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Ubiquitous nuclear expression.

Tissue specificity

Expressed in 80 out of 81 cell types

Reliability (APE)

High

Antibodies in assay

CAB003803, HPA019150
 

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 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 97% of the cancers

Antibodies in assay

CAB003803, HPA019150
 

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

High
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

CAB003803

HPA019150

CAB003803

HPA019150

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB003803 mAb
HPA019150 pAb