CATH Classification

Domain Context

CATH Clusters

Superfamily Vaccinia Virus protein VP39
Functional Family Putative SAM-dependent methyltransferase

Enzyme Information

2.1.1.64
3-demethylubiquinol 3-O-methyltransferase.
based on mapping to UniProt P39367
S-adenosyl-L-methionine + 3-demethylubiquinone-n = S-adenosyl-L- homocysteine + ubiquinone-n.
-!- This enzyme is involved in ubiquinone biosynthesis. -!- Ubiquinones from different organisms have a different number of prenyl units (for example, ubiquinone-6 in Saccharomyces, ubiquinone- 9 in rat and ubiquinone-10 in human), and thus the natural substrate for the enzymes from different organisms has a different number of prenyl units. -!- However, the enzyme usually shows a low degree of specificity regarding the number of prenyl units. -!- For example, the human COQ3 enzyme can restore biosynthesis of ubiquinone-6 in coq3 deletion mutants of yeast. -!- The enzymes from yeast, Escherichia coli and rat also catalyze the methylation of 3,4-dihydroxy-5-all-trans-polyprenylbenzoate (a reaction that is classified as EC 2.1.1.114).
2.1.1.-
Methyltransferases.
based on mapping to UniProt P39367

UniProtKB Entries (1)

P39367
YJHP_ECOLI
Escherichia coli K-12
Uncharacterized protein YjhP

PDB Structure

PDB 1NKV
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
X-RAY STRUCTURE OF YJHP FROM E.COLI NORTHEAST STRUCTURAL GENOMICS RESEARCH CONSORTIUM (NESG) TARGET ER13
Kuzin, A., Manor, P., Benach, J., Smith, P., Rost, B., Xiao, R., Montelione, G., Hunt, J.
To be published