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GENE AND PROTEIN SUMMARY

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Gene name

IDO1

Description

indoleamine 2,3-dioxygenase 1

Protein class

Candidate cancer biomarkers, Enzymes, Mapped to UniProt SWISS-PROT, Potential transmembrane proteins

Protein evidence

High

Entrez gene summary

This gene encodes indoleamine 2,3-dioxygenase (IDO) - a heme enzyme that catalyzes the first and rate-limiting step in tryptophan catabolism to N-formyl-kynurenine. This enzyme acts on multiple tryptophan substrates including D-tryptophan, L-tryptophan, 5-hydroxy-tryptophan, tryptamine, and serotonin. This enzyme is thought to play a role in a variety of pathophysiological processes such as antimicrobial and antitumor defense, neuropathology, immunoregulation, and antioxidant activity. Through its expression in dendritic cells, monocytes, and macrophages this enzyme modulates T-cell behavior by its peri-cellular catabolization of the essential amino acid tryptophan.[provided by RefSeq, Feb 2011]

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 but not nucleoli, Mitochondria, Vesicles, Cytoskeleton (Microtubules)

Additional location(s)

 

Staining summary

Localized to microtubules, mitochondria or nucleus and vesicles.

Reliability (APE)

Very low

Antibodies in assay

HPA023072, HPA023149, HPA027772
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

High cytoplasmic expression in lymphoid cells. Expressed in a few other cell types but at lower levels.

Tissue specificity

Expressed in 26 out of 81 cell types

Reliability (APE)

High

Antibodies in assay

HPA023072, HPA023149, HPA027772
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 4
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 30% of the cancers

Antibodies in assay

HPA023072, HPA023149, HPA027772
 

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

HPA023072

HPA023149

HPA027772

HPA023072

HPA023149

HPA027772

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

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA023072 pAb
HPA023149 pAb
HPA027772 pAb