EC number 4.4.1.13 IntEnz IntEnz view ExPASy NiceZyme view | CAS number 68652-57-3 BRENDA BRENDA entry KEGG KEGG entry | |
In enzymology, a cysteine-S-conjugate beta-lyase (EC 4.4.1.13) is an enzyme that catalyzes the chemical reaction
RS-CH2-CH(NH3+)COO-Hence, this enzyme has one substrate, [[RS-CH2-CH(NH3+)COO-]], but 3 products: RSH, NH3, and pyruvate.
This enzyme belongs to the family of lyases, specifically the class of carbon-sulfur lyases. The systematic name of this enzyme class is L-cysteine-S-conjugate thiol-lyase (deaminating; pyruvate-forming). Other names in common use include cysteine conjugate beta-lyase, glutamine transaminase K/cysteine conjugate beta-lyase, and L-cysteine-S-conjugate thiol-lyase (deaminating). It employs one cofactor, pyridoxal phosphate.
Structural studies
As of late 2007, 3 structures have been solved for this class of enzymes, with PDB accession codes 1W7L, 1W7M, and 1W7N.