L-cystine beta-lyase EC#: 4.4.1.35; ChemWhat Code: 1382953
| Product Name | L-cystine beta-lyase |
| Example Structure |  |
| Synonyms | BOCL3, cis-3-hydroxy-L-proline hydro-lyase (1-pyrroline-2-carboxylate-forming), CORI3 |
| EC Number | 4.4.1.35 |
| CAS Registry Number | |
| Comments | A pyridoxal 5′-phosphate protein. The enzyme cleaves a carbon-sulfur bond, releasing?L-thiocysteine and an unstable enamine product that tautomerizes to an imine form, which undergoes a hydrolytic deamination to form pyruvate and ammonia. The latter reaction, which can occur spontaneously, can also be catalysed by EC?3.5.99.10, 2-iminobutanoate/2-iminopropanoate deaminase. The enzyme from?Brassica oleracea?var.?italica?(broccoli) does not act on cysteine or cystathionine. |
| Cofactor | pyridoxal 5′-phosphate |
| History | |
| Reactions | L-cystine + H(2)O = L-thiocysteine + pyruvate + NH(3). |
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