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GENE AND PROTEIN SUMMARY

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Gene name

SIPA1

Description

signal-induced proliferation-associated 1

Protein class

Mapped to UniProt SWISS-PROT

Protein evidence

Medium

Entrez gene summary

The product of this gene is a mitogen induced GTPase activating protein (GAP). It exhibits a specific GAP activity for Ras-related regulatory proteins Rap1 and Rap2, but not for Ran or other small GTPases. This protein may also hamper mitogen-induced cell cycle progression when abnormally or prematurely expressed. It is localized to the perinuclear region. Two alternatively spliced variants encoding the same isoform have been characterized to date. [provided by RefSeq, Jul 2008]

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)

Nucleus

Additional location(s)

 

Staining summary

Staining of the nucleus in all three cell lines.

Reliability (Single)

Antibodies in assay

CAB020833
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Most normal cells displayed moderate nuclear and cytoplasmic immunoreactivity. Strong positivity was observed in stomach, large colon and trophoblastic cells of placenta. Prostate, CNS and squamous epithelia were in most cases weakly stained or negative.

Tissue specificity

Staining in 57 out of 75 cell types

Reliability (Single)

Antibodies in assay

CAB020833
 

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 11
Placenta 1
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 10
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 69% of the cancers

Antibodies in assay

CAB020833
 

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

CAB020833

CAB020833

A-431 Skin Low
Weak
A-549 Lung Medium
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 High
RT-4 Urinary bladder Low
U-2 OS Bone Medium
Weak
U-251 MG Brain Low
Weak

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB020833 msAb