Molybdopterin synthase

Molybdopterin synthase
Identifiers
EC number 2.8.1.12
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Molybdopterin synthase (EC 2.8.1.12, MPT synthase) is an enzyme required to synthesize molybdenum cofactor (MoCo) from precursor Z (now known as cyclic pyranopterin monophosphate).[1][2] This enzyme catalyses the following chemical reaction

cyclic pyranopterin monophosphate + 2 [molybdopterin-synthase sulfur-carrier protein]-Gly-NH-CH2-C(O)SH + H2O molybdopterin + 2 molybdopterin-synthase sulfur-carrier protein

It is heterodimeric and coded for by the MOCS2 gene.[3]

References

  1. Daniels JN, Wuebbens MM, Rajagopalan KV, Schindelin H (January 2008). "Crystal structure of a molybdopterin synthase-precursor Z complex: insight into its sulfur transfer mechanism and its role in molybdenum cofactor deficiency". Biochemistry. 47 (2): 615–26. doi:10.1021/bi701734g. PMID 18092812.
  2. Wuebbens MM, Rajagopalan KV (April 2003). "Mechanistic and mutational studies of Escherichia coli molybdopterin synthase clarify the final step of molybdopterin biosynthesis". The Journal of Biological Chemistry. 278 (16): 14523–32. doi:10.1074/jbc.m300453200. PMID 12571226.
  3. Sloan J, Kinghorn JR, Unkles SE (February 1999). "The two subunits of human molybdopterin synthase: evidence for a bicistronic messenger RNA with overlapping reading frames". Nucleic Acids Research. 27 (3): 854–8. doi:10.1093/nar/27.3.854. PMC 148257. PMID 9889283.
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