Fields »

GENE AND PROTEIN SUMMARY

? »

Gene name

COQ3

Description

coenzyme Q3 homolog, methyltransferase (S. cerevisiae)

Protein class

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

Protein evidence

High

Entrez gene summary

Ubiquinone, also known as coenzyme Q, or Q, is a critical component of the electron transport pathways of both eukaryotes and prokaryotes (Jonassen and Clarke, 2000 [PubMed 10777520]). This lipid consists of a hydrophobic isoprenoid tail and a quinone head group. The tail varies in length depending on the organism, but its purpose is to anchor coenzyme Q to the membrane. The quinone head group is responsible for the activity of coenzyme Q in the respiratory chain. The S. cerevisiae COQ3 gene encodes an O-methyltransferase required for 2 steps in the biosynthetic pathway of coenzyme Q. This enzyme methylates an early coenzyme Q intermediate, 3,4-dihydroxy-5-polyprenylbenzoic acid, as well as the final intermediate in the pathway, converting demethyl-ubiquinone to coenzyme Q. The COQ3 gene product is also capable of methylating the distinct prokaryotic early intermediate 2-hydroxy-6-polyprenyl phenol.[supplied by OMIM, Mar 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

? »

Show image »

Main location(s)

Nucleus but not nucleoli, Mitochondria

Additional location(s)

 

Staining summary

Localized to the nucleus and mitochondria.

Reliability (APE)

Low

Antibodies in assay

HPA031273, HPA031274
 

NORMAL TISSUE & ORGAN SUMMARY

? »

Show image »

Expression summary

Ubiquitous cytoplasmic expression in essentially all cells except in lymphoid tissues, CNS and mesenchymal cells.

Tissue specificity

Expressed in 41 out of 82 cell types

Reliability (APE)

High

Antibodies in assay

HPA031273, HPA031274
 

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

? »

Staining summary

Antibody staining in 48% of the cancers

Antibodies in assay

HPA031273, HPA031274
 

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

? »

RNA evidence

High
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA031274

HPA031273

HPA031274

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

ANTIBODY SUMMARY

? »

Antibody

Clonality

Validation

HPA031273 pAb
HPA031274 pAb