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homoserine O-trans- acetylase O- acetylhomoserine (thiol)-lyase cystathionine beta-synthase cystathionine gamma-lyase Homoserine dehydrogenase aspartic beta semi-aldehyde dehydrogenase aspartokinase cystathionine gamma-lyase cystathionine beta-lyase cystathionine beta-lyase subunit 2 L-Homoserine Acetyl-CoA CoA Acetylhomoserine Hydrogen sulfide Acetic acid H+ Homocysteine L-Serine H2O L-Cystathionine H2O Ammonium L-Cysteine 2-Ketobutyric acid NADPH L-Aspartate- semialdehyde H+ NADP L-Aspartyl-4- phosphate H+ NADPH Pi NADP ATP L-Aspartic acid ADP Hydrogen sulfide H+ 2-aminoprop- 2-enoate 2- iminopropanoate H2O H+ Ammonium Pyruvic acid Pyruvic acid Ammonium H2O Acetylhomoserine Acetic acid H+ Endocytosis
MET2 MET17 CYS4 CYS3 HOM6 HOM2 HOM3 CYS3 IRC7 STR3 L-Homoserine Acetyl-CoA Coenzyme A Acetylhomoserine Hydrogen sulfide Acetic acid Hydrogen Ion Homocysteine L-Serine Water L-Cystathionine Water Ammonium L-Cysteine 2-Ketobutyric acid NADPH L-Aspartate- semialdehyde Hydrogen Ion NADP L-Aspartyl-4- phosphate Hydrogen Ion NADPH Phosphate NADP Adenosine triphosphate L-Aspartic acid Adenosine diphosphate Hydrogen sulfide Hydrogen Ion 2-aminoprop- 2-enoate 2- iminopropanoate Water Hydrogen Ion Ammonium Pyruvic acid Pyruvic acid Ammonium Water Acetylhomoserine Acetic acid Hydrogen Ion Endocytosis