# Candidate

orgId: NCBI__GCA_023150845.1
pathwayId: cys
stepId: PSSH
locusId: MCK6524189.1
sysName: L6R49_22505
desc: cysteine synthase family protein
curatedIds: metacyc::MONOMER-20568
otherIds:
BRENDA::P0ABK5,CharProtDB::CH_024343,SwissProt::P0ABK5,ecocyc::ACSERLYA-MONOMER,metacyc::ACSERLYA-MONOMER


orgId: NCBI__GCA_023150845.1
pathwayId: cys
stepId: serA
locusId: MCK6520898.1
sysName: L6R49_05580
desc: hypothetical protein
otherIds: SwissProt::Q9C4M5,BRENDA::Q9C4M5
curatedIds:
BRENDA::C3SVM7,BRENDA::P0A9T0,CharProtDB::CH_088336,SwissProt::P0A9T0,ecocyc::PGLYCDEHYDROG-MONOMER,metacyc::PGLYCDEHYDROG-MONOMER


orgId: NCBI__GCA_023150845.1
pathwayId: phe
stepId: PPYAT
locusId: MCK6523768.1
sysName: L6R49_20345
desc: branched-chain amino acid transaminase
curatedIds:
CharProtDB::CH_024500,ecocyc::BRANCHED-CHAINAMINOTRANSFER-MONOMER,metacyc::BRANCHED-CHAINAMINOTRANSFER-MONOMER


# RequirementNotMet

orgId: NCBI__GCA_023150845.1
pathwayId: cys
ruleId: from-serine-homocysteine
requiredPathwayId: met
requiredRuleId: homocysteine
comment:
Cysteine biosynthesis via the reverse transsulfuration pathway requires homocysteine, which is an intermediate in methionine biosynthesis. Homocysteine is also an intermediate in the S-adenosylmethionine cycle, so many organisms that cannot synthesize methionine can convert it to homocysteine.


