Enzyme:4.4.1.8

Revision as of 09:00, 2 February 2009

cystathionine L-homocysteine-lyase (deaminating)
Systematic Name	cystathionine L-homocysteine-lyase (deaminating)
Common Name	cystathionine beta-lyase beta-cystathionase cystine lyase

(2R) -2-Amino-3- (2-amino-3-hydroxy-3-oxopropyl) disulfanylpropanoic acid	<Mapping> AtomMap:BMAAS3SF0006$BMAAS3SF0003$0	L-Cysteine
	6 ↔ 1 7 ↔ 2 8 ↔ 3 9 ↔ 4 10 ↔ 5

(2R) -2-Amino-3- (2-amino-3-hydroxy-3-oxopropyl) disulfanylpropanoic acid	<Mapping> AtomMap:BMAAS3SF0006$BMAAS3SF0003$1 (2nd)	L-Cysteine
	1 ↔ 1 2 ↔ 2 3 ↔ 3 4 ↔ 4 5 ↔ 5

Seleno-L-cystathionine + H2O => Seleno-L-homocysteine + Pyruvic acid + NH3
(links: Seleno-L-homocysteine + Seleno-L-cystathionine = Seleno-L-cystathionine + 2-Oxo-propanoic acid + NH3)

Seleno-L-homocysteine	<Mapping> AtomMap:BMAXS4MT0001$BMAXDP--c016$0	Seleno-L-cystathionine
	1 ↔ 5 2 ↔ 6 3 ↔ 7 4 ↔ 8 5 ↔ 9

Seleno-L-cystathionine	<Mapping> AtomMap:BMAXDP--c016$BMFYS3CAp025$0	2-Oxo-propanoic acid
	1 ↔ 1 2 ↔ 2 3 ↔ 3

Seleno-L-cystathionine	<Mapping> AtomMap:BMAXDP--c016$BMIONT--0004$1 (2nd)	NH3
	4 ↔ 1

L-Cystathionine + H2O => L-Homocysteine + Pyruvic acid + NH3
(links: L-Homocysteine + L-Cystathionine = L-Cystathionine + 2-Oxo-propanoic acid + NH3)

L-Homocysteine	<Mapping> AtomMap:BMAAS4SF0002$BMFYB4CAf021$0	L-Cystathionine
	1 ↔ 1 2 ↔ 2 3 ↔ 3 4 ↔ 4 5 ↔ 5 6 ↔ 6

L-Cystathionine	<Mapping> AtomMap:BMFYB4CAf021$BMFYS3CAp025$0	2-Oxo-propanoic acid
	7 ↔ 1 8 ↔ 2 9 ↔ 3

L-Cystathionine	<Mapping> AtomMap:BMFYB4CAf021$BMIONT--0004$1 (2nd)	NH3
	10 ↔ 1

@@ Line 3: / Line 3: @@
 |SysName=cystathionine L-homocysteine-lyase (deaminating)
 |names=&&cystathionine beta-lyase&&beta-cystathionase&&cystine lyase
+}}
+{{Enzyme/Reaction| reaction= L-Cystine = 2 L-Cysteine
+| list=
+&& BMAAS3SF0006$BMAAS3SF0003$0
+&& BMAAS3SF0006$BMAAS3SF0003$1
+}}
+{{Enzyme/Reaction| reaction= Seleno-L-cystathionine + H2O => Seleno-L-homocysteine + Pyruvic acid + NH3
+| list=
+&& BMAXS4MT0001$BMAXDP--c016$0
+&& BMAXDP--c016$BMFYS3CAp025$0
+&& BMAXDP--c016$BMIONT--0004$1
+}}
+{{Enzyme/Reaction| reaction= L-Cystathionine + H2O => L-Homocysteine + Pyruvic acid + NH3
+| list=
+&& BMAAS4SF0002$BMFYB4CAf021$0
+&& BMFYB4CAf021$BMFYS3CAp025$0
+&& BMFYB4CAf021$BMIONT--0004$1
 }}

IDs and Links
IUBMB	EC4
ExPaSy	NiceZyme 4.4.1.8