NCBI Accession #
B6TNK6.1
NCBI Official Full Name
Adenylyltransferase and sulfurtransferase MOCS3-1
NCBI Official Symbol
LOC103638013
NCBI Official Synonym Symbols
CNX5; UBA4-1; MOCS3-1; GRMZM2G160842
NCBI Protein Information
adenylyltransferase and sulfurtransferase MOCS3-1
UniProt Gene Name
MOCS3-1
UniProt Protein Name
Adenylyltransferase and sulfurtransferase MOCS3-1
UniProt Synonym Protein Names
Sulfur carrier protein MOCS2A sulfurtransferase 1
UniProt Primary Accession #
B6TNK6
UniProt Secondary Accession #
B4FZ31
UniProt Related Accession #
B6TNK6
UniProt Comments
Plays a central role in 2-thiolation of mcm5S2U at tRNA wobble positions of cytosolic tRNA(Lys), tRNA(Glu) and tRNA(Gln). Also essential during biosynthesis of the molybdenum cofactor. Acts by mediating the C-terminal thiocarboxylation of sulfur carriers URM1 and MOCS2A. Its N-terminus first activates URM1 and MOCS2A as acyl-adenylates (-COAMP), then the persulfide sulfur on the catalytic cysteine is transferred to URM1 and MOCS2A to form thiocarboxylation (-COSH) of their C-terminus. The reaction probably involves hydrogen sulfide that is generated from the persulfide intermediate and that acts as nucleophile towards URM1 and MOCS2A. Subsequently, a transient disulfide bond is formed. Does not use thiosulfate as sulfur donor; NFS1 probably acting as a sulfur donor for thiocarboxylation reactions.