Molybdopterin synthase sulfurtransferase
Identifiers
EC no.2.8.1.11
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BRENDABRENDA entry
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Molybdopterin synthase sulfurtransferase (EC 2.8.1.11, adenylyltransferase and sulfurtransferase MOCS3, Cnx5 (gene), molybdopterin synthase sulfurylase) is an enzyme with systematic name persulfurated L-cysteine desulfurase:(molybdopterin-synthase sulfur-carrier protein)-Gly-Gly sulfurtransferase.[1][2][3][4] This enzyme catalyses the following chemical reaction

[molybdopterin-synthase sulfur-carrier protein]-Gly-Gly-AMP + [cysteine desulfurase]-S-sulfanyl-L-cysteine AMP + [molybdopterin-synthase sulfur-carrier protein]-Gly-NH-CH2-C(O)SH + cysteine desulfurase

The enzyme transfers sulfur to form a thiocarboxylate moiety on the C-terminal glycine of the small subunit of molybdopterin synthase.

References

  1. Matthies A, Nimtz M, Leimkühler S (May 2005). "Molybdenum cofactor biosynthesis in humans: identification of a persulfide group in the rhodanese-like domain of MOCS3 by mass spectrometry". Biochemistry. 44 (21): 7912–20. doi:10.1021/bi0503448. PMID 15910006.
  2. Leimkühler S, Rajagopalan KV (June 2001). "A sulfurtransferase is required in the transfer of cysteine sulfur in the in vitro synthesis of molybdopterin from precursor Z in Escherichia coli". The Journal of Biological Chemistry. 276 (25): 22024–31. doi:10.1074/jbc.M102072200. PMID 11290749.
  3. Hänzelmann P, Dahl JU, Kuper J, Urban A, Müller-Theissen U, Leimkühler S, Schindelin H (December 2009). "Crystal structure of YnjE from Escherichia coli, a sulfurtransferase with three rhodanese domains". Protein Science. 18 (12): 2480–91. doi:10.1002/pro.260. PMC 2821267. PMID 19798741.
  4. Dahl JU, Urban A, Bolte A, Sriyabhaya P, Donahue JL, Nimtz M, Larson TJ, Leimkühler S (October 2011). "The identification of a novel protein involved in molybdenum cofactor biosynthesis in Escherichia coli". The Journal of Biological Chemistry. 286 (41): 35801–12. doi:10.1074/jbc.M111.282368. PMC 3195606. PMID 21856748.
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