oxidoreductase activity, acting on CH or CH2 groups, disulfide as acceptor vitamin-K-epoxide reductase (warfarin-sensitive) activity https://github.com/geneontology/go-ontology/issues/21412 https://github.com/geneontology/go-ontology/issues/30193 molecular_function vitamin K1 epoxide reductase activity Catalysis of the reaction: phylloquinol + a protein with a disulfide bond = phylloquinone + a protein with reduced L-cysteine residues. phylloquinone epoxide reductase activity MetaCyc:1.1.4.1-RXN Reactome:R-HSA-6806647 EC:1.17.4.4 Reactome:R-HSA-159790 GO:0047057 RHEA:57744