CATH Classification

Domain Context

CATH Clusters

Superfamily Aspartate Aminotransferase, domain 1
Functional Family

Enzyme Information

2.8.1.7
Cysteine desulfurase.
based on mapping to UniProt Q55793
L-cysteine + acceptor = L-alanine + S-sulfanyl-acceptor.
-!- The sulfur from free L-cysteine is first transferred to a cysteine residue in the active site, and then passed on to various other acceptors. -!- The enzyme is involved in the biosynthesis of iron-sulfur clusters, thio-nucleosides in tRNA, thiamine, biotin, lipoate and pyranopterin (molybdopterin). -!- In Azotobacter vinelandii, this sulfur provides the inorganic sulfide required for nitrogenous metallocluster formation.

UniProtKB Entries (1)

Q55793
CSD_SYNY3
Synechocystis sp. PCC 6803 substr. Kazusa
Probable cysteine desulfurase

PDB Structure

PDB 1T3I
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Kinetic and structural characterization of Slr0077/SufS, the essential cysteine desulfurase from Synechocystis sp. PCC 6803.
Tirupati, B., Vey, J.L., Drennan, C.L., Bollinger Jr., J.M.
Biochemistry