# Candidate

orgId: NCBI__GCA_022072165.1
pathwayId: phe
stepId: PPYAT
locusId: MCG3152592.1
sysName: GEEBNDBF_01894
desc: Branched-chain-amino-acid aminotransferase
curatedIds:
CharProtDB::CH_024500,ecocyc::BRANCHED-CHAINAMINOTRANSFER-MONOMER,metacyc::BRANCHED-CHAINAMINOTRANSFER-MONOMER


# RequirementNotMet

orgId: NCBI__GCA_022072165.1
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.


