Cysteine lyase

cysteine lyase
Identifiers
EC number	4.4.1.10
CAS number	9079-86-1
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / EGO
Search PMC articles PubMed articles

In enzymology, a cysteine lyase (EC 4.4.1.10) is an enzyme that catalyzes the chemical reaction

L-cysteine + sulfite $\rightleftharpoons$ L-cysteate + hydrogen sulfide

Thus, the two substrates of this enzyme are L-cysteine and sulfite, whereas its two products are L-cysteate and hydrogen sulfide.

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 hydrogen-sulfide-lyase (adding sulfite L-cysteate-forming). Other names in common use include cysteine (sulfite) lyase, and L-cysteine hydrogen-sulfide-lyase (adding sulfite). This enzyme participates in cysteine metabolism and taurine and hypotaurine metabolism. It employs one cofactor, pyridoxal phosphate.

References

• Tolosa EA, Chepurnova NK, Khomutov RM, Severin ES (1969). "Reactions catalysed by cysteine lyase from the yolk sac of chicken embryo". Biochim. Biophys. Acta. 171 (2): 369–71. PMID 5813025. 

This lyase article is a stub. You can help Wikipedia by expanding it.v · Categories: Lyase stubs EC 4.4.1 Pyridoxal phosphate enzymes Enzymes of unknown structure Wikimedia Foundation. 2010. Игры ⚽ Нужен реферат? Cystathionine beta-lyase Cysteine-S-conjugate beta-lyase Look at other dictionaries: Cysteine metabolism — refers to the biological pathways that consume or create cysteine. The pathways of different amino acids and other metabolites interweave and overlap to creating complex systems. Human cysteine metabolism In human cysteine metabolism, L cysteine… …   Wikipedia Cysteine-S-conjugate beta-lyase — Identifiers EC number 4.4.1.13 CAS number 68652 57 3 …   Wikipedia Cysteine dioxygenase — cysteine dioxygenase, type I Identifiers Symbol CDO1 Entrez 1036 HUGO …   Wikipedia Cysteine synthase — Identifiers EC number 2.5.1.47 CAS number 37290 89 4 …   Wikipedia Cysteine — Not to be confused with cystine. CYS redirects here. CYS may also refer to California Youth Symphony. L Cysteine …   Wikipedia cysteine — Amino 3 mercaptopropionic acid; the l isomer is found in most proteins; especially abundant in keratin. c. desulfhydrase SYN: cystathionine γ lyase. c. synthase SYN: cystathionine β synthase. * * * cys·teine sis tə .ēn n a sulfur containing amino …   Medical dictionary S-alkylcysteine lyase — In enzymology, a S alkylcysteine lyase (EC number|4.4.1.6) is an enzyme that catalyzes the chemical reaction:an S alkyl L cysteine + H2O ightleftharpoons an alkyl thiol + NH3 + pyruvateThus, the two substrates of this enzyme are S alkyl L… …   Wikipedia D-cysteine desulfhydrase — Identifiers EC number 4.4.1.15 CAS number 84012 74 8 …   Wikipedia Cystathionine gamma-lyase — Cysteine metabolism. Cystathionase catalyzes the lower reaction. Identifiers EC number …   Wikipedia Alliin lyase — In enzymology, an alliin lyase (EC number|4.4.1.4) is an enzyme that catalyzes the chemical reaction:an S alkyl L cysteine S oxide ightleftharpoons an alkyl sulfenate + 2 aminoacrylateHence, this enzyme has one substrate, S alkyl L cysteine S… …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”