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IUBMB Comments A pyridoxal 5′-phosphate protein. The enzyme, purified from the bacterium Bacillus subtilis , also has a low activity with L -serine (cf . EC 4.2.1.22, cystathionine β-synthase).
Synonyms
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cystathionine gamma-lyase
O-acetylserine dependent cystathionine beta-synthase
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cystathionine gamma-lyase
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cystathionine gamma-lyase
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MCCB
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YrhB
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O-acetyl-L-serine + L-homocysteine = L-cystathionine + acetate
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MetaCyc
L-cysteine biosynthesis VI (reverse transsulfuration)
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O-acetyl-L-serine:L-homocysteine 2-amino-2-carboxyethyltransferase
A pyridoxal 5'-phosphate protein. The enzyme, purified from the bacterium Bacillus subtilis, also has a low activity with L-serine (cf. EC 4.2.1.22, cystathionine beta-synthase).
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L-cystathionine + acetate
O-acetyl-L-serine + L-homocysteine
additional information
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L-cystathionine + acetate
O-acetyl-L-serine + L-homocysteine
Substrates: -
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L-cystathionine + acetate
O-acetyl-L-serine + L-homocysteine
Substrates: -
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additional information
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Substrates: enzyme displays both cystathionine lyase and homocysteine gamma-lyase activities in vitro
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additional information
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Substrates: enzyme displays both cystathionine lyase and homocysteine gamma-lyase activities in vitro
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L-cystathionine + acetate
O-acetyl-L-serine + L-homocysteine
additional information
?
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L-cystathionine + acetate
O-acetyl-L-serine + L-homocysteine
Substrates: -
?
L-cystathionine + acetate
O-acetyl-L-serine + L-homocysteine
Substrates: -
?
additional information
?
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Substrates: enzyme displays both cystathionine lyase and homocysteine gamma-lyase activities in vitro
?
additional information
?
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Substrates: enzyme displays both cystathionine lyase and homocysteine gamma-lyase activities in vitro
?
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3
L-cystathionine
pH 7.5, 30°C
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cf. EC 4.4.1.1
UniProt
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cf. EC 4.4.1.1
UniProt
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Highest Expressing Human Cell Lines
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Cell Line Links
Gene Links
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physiological function
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disruption of the mccB gene does not affect expression of the downstream gene luxS encoding S-ribosylhomocysteine lyase. MccB mutants remain motile
physiological function
mutants inactivated for yrhB grow similarly to the wild-type strain in the presence of methionine. The yrhB and yrhA genes form an operon together with yrrT, mtnN, and yrhC
physiological function
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mutants inactivated for yrhB grow similarly to the wild-type strain in the presence of methionine. The yrhB and yrhA genes form an operon together with yrrT, mtnN, and yrhC
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MCCA_BACSU
Bacillus subtilis (strain 168)
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33019
Swiss-Prot
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MCCB_BACSU
Bacillus subtilis (strain 168)
379
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40886
Swiss-Prot
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Hullo, M.F.; Auger, S.; Soutourina, O.; Barzu, O.; Yvon, M.; Danchin, A.; Martin-Verstraete, I.
Conversion of methionine to cysteine in Bacillus subtilis and its regulation
J. Bacteriol.
189
187-197
2007
Bacillus subtilis (O05394), Bacillus subtilis 168 (O05394)
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Shen, F.; Hobley, L.; Doherty, N.; Loh, J.T.; Cover, T.L.; Sockett, R.E.; Hardie, K.R.; Atherton, J.C.
In Helicobacter pylori auto-inducer-2, but not LuxS/MccAB catalysed reverse transsulphuration, regulates motility through modulation of flagellar gene transcription
BMC Microbiol.
10
210
2010
Helicobacter pylori
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