Molybdopterin synthase sulfurtransferase (, ''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''.
This enzyme
catalyses the following
chemical reaction
:
olybdopterin-synthase sulfur-carrier proteinGly-Gly-AMP +
ysteine desulfuraseS-sulfanyl-L-cysteine
AMP +
olybdopterin-synthase sulfur-carrier proteinGly-NH-CH2-C(O)SH +
cysteine desulfurase
The enzyme transfers
sulfur
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula ...
to form a
thiocarboxylate
In organic chemistry, thiocarboxylic acids are organosulfur compounds related to carboxylic acids by replacement of one of the oxygen atoms with a sulfur atom. Two tautomers are possible: a thione form () and a thiol form (). These are someti ...
moiety on the
C-terminal glycine of the small subunit of
molybdopterin synthase.
References
External links
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EC 2.8.1