GCV3 notes (YAL044C, P39726)

• H-protein of GCS, lipoyl carrier (Lys-102) PMID:9020168; needed for glycine as N source PMID:9020168.
• Moonlighting role in protein lipoylation: PMID:19570983; K102 mutants abolish Lat1/Kgd2 lipoylation PMID:19570983.
• Lipoylated in vivo PMID:32974306.

Curation observations

• No GCS-specific GO MF term for the lipoyl/aminomethyl swinging-arm carrier; GO:0031405 lipoic acid
  binding used as the closest, while GO:0140104 molecular carrier activity may be an appropriate parent.
• protein lipoylation (IMP) accepted: Gcv3 is the first lipoylated intermediate in the relay, not just a substrate (same logic as Bacillus GcvH).

2026-11-10 glycine cleavage module completion pass (Claude, AI-assisted)

• Every row now carries a verbatim supporting quote; truncated UniProt quotes were completed to the end of the claim.
• Broad parent rows shared across the module's P/H/T/L reviews were harmonized: glycine metabolic/catabolic process (and amino acid metabolic process) -> MODIFY to GO:0019464; for the L proteins 2-oxoglutarate metabolic process and tricarboxylic acid cycle -> MODIFY to GO:0120551, generic oxidoreductase parents -> MODIFY to GO:0004148, FAD binding ACCEPT.