Biology:Mycothione reductase

From HandWiki
mycothione reductase
Identifiers
EC number1.8.1.15
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO

In enzymology, a mycothione reductase (EC 1.8.1.15) is an enzyme that catalyzes the chemical reaction

mycothione + NAD(P)H + H + [math]\displaystyle{ \rightleftharpoons }[/math] 2 mycothiol + NADP+

in M. tuberculosis and other actinomycetes.

The 2 substrates of this enzyme are mycothiol and NADPH, whereas 2 molecules of mycothione and NADP+ are formed as products.

This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is mycothiol:NAD(P)+ oxidoreductase. This enzyme is also called mycothiol-disulfide reductase.

References

  • "Expression, purification, and characterization of Mycobacterium tuberculosis mycothione reductase". Biochemistry 38 (36): 11827–33. 1999. doi:10.1021/bi991025h. PMID 10512639. 
  • "Mycobacterium tuberculosis mycothione reductase: pH dependence of the kinetic parameters and kinetic isotope effects". Biochemistry 40 (17): 5119–26. 2001. doi:10.1021/bi0029144. PMID 11318633.