Protein
Cysteine desulfurase, mitochondrial
Organism
Ashbya gossypii (strain ATCC 10895 / CBS 109.51 / FGSC 9923 / NRRL Y-1056)
Function
Catalyzes the removal of elemental sulfur from cysteine to produce alanine. It supplies the inorganic sulfur for iron-sulfur (Fe-S) clusters. Plays a role in both tRNA-processing and mitochondrial metabolism. Involved in the 2-thio-modification of both 5-carboxymethylaminomethyl-2-thiouridine in mitochondrial tRNAs and 5-methoxycarbonylmethyl-2-thiouridine (mcm5s2U) in cytoplasmic tRNAs.
Similarity
Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. NifS/IscS subfamily.
Sequence
MLRQVLRRSLSDSRRPLRSVGSISCSARASGIGMRAYSSQIFKEGMQLETHTDIQSAAREQAQERMGSEALASNNSVLKHAYQESVDHGTRPIYLDMQATTPTDPRVVDTMLKFYTGLYGNPHSNTHSYGWETSQEVEKARKNVADVIKADPKEIIFTSGATESNNMALKGVARFYKKRKNHIITTRTEHKCVLEAARSMKDEGFDVTFLNVNEDGLVSLEELEQAIRPETSLVSVMSVNNEIGVVQPIKEIGAICRRHKVFFHSDAAQAYGKIPIDVDEMNIDLLSISSHKIYGPKGIGALYVRRRPRVRMEPLLSGGGQERGFRSGTLPPPLVVGLGHAAKLMVEEYEYDSAHVRRLSDRLLKGLLSIEQTTLNGSADHRYPGCVNVSFAFVEGESLLMALRDIALSSGSACTSASLEPSYVLHAIGRDDALAHSSIRFGIGRFTTEAEVDYVIKAITERVEFLRELSPLWEMYKDGIDLNTIEWSGH