Lady Fern – Athyrium filix-femina

The enzyme D-cysteine desulfhydrase (EC 4.4.1.15) catalyzes the chemical reaction

D-cysteine + H₂O

\rightleftharpoons

sulfide + NH₃ + pyruvate

This enzyme belongs to the family of lyases, specifically the class of carbon-sulfur lyases. The systematic name of this enzyme class is D-cysteine sulfide-lyase (deaminating; pyruvate-forming). Other names in common use include D-cysteine lyase, and D-cysteine sulfide-lyase (deaminating). This enzyme participates in cysteine metabolism.

References

Nagasawa T, Ishii T, Kumagai H, Yamada H (1985). "D-Cysteine desulfhydrase of Escherichia coli. Purification and characterization". Eur. J. Biochem. 153 (3): 541–51. doi:10.1111/j.1432-1033.1985.tb09335.x. PMID 3908101.
Schmidt A (1982). "A cysteine desulfhydrase from spinach leaves specific for D-cysteine". Z. Pflanzenphysiol. 107: 301–312.
Schmidt A; Erdle I (1983). "A cysteine desulfhydrase specific for D-cysteine from the green-alga Chlorella fusca". Z. Naturforsch. C: Biosci. 38: 428–435.

Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

Lady Fern – Athyrium filix-femina

References

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