NCBI Accession #
NP_001130855.1
NCBI GenBank Nucleotide #
NM_001137383.1
NCBI Official Full Name
adenylyltransferase and sulfurtransferase MOCS3-2
NCBI Official Symbol
MOCS3-2
NCBI Official Synonym Symbols
UBA4-2; GRMZM2G157836; GRMZM5G881641
NCBI Protein Information
adenylyltransferase and sulfurtransferase MOCS3-2
UniProt Gene Name
MOCS3-2
UniProt Protein Name
Adenylyltransferase and sulfurtransferase MOCS3-2
UniProt Synonym Protein Names
Sulfur carrier protein MOCS2A sulfurtransferase 2
UniProt Primary Accession #
B4FAT0
UniProt Related Accession #
B4FAT0
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.