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Catalysis of a ring closure reaction. Catalysis of the reaction: alkene group + alcohol group on same molecule = cyclic ether. Substrates are 2-methyl-6-phytyl-1,4- hydroquinone (forms delta-tocopherol) and 2,3-dimethyl-5-phytyl-1,4-hydroquinone (forms gamma-tocopherol). Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: tocopherol cyclase activity
Acc: GO:0009976
Aspect: Molecular Function
Desc: Catalysis of the reaction: alkene group + alcohol group on same molecule = cyclic ether. Substrates are 2-methyl-6-phytyl-1,4- hydroquinone (forms delta-tocopherol) and 2,3-dimethyl-5-phytyl-1,4-hydroquinone (forms gamma-tocopherol).
Proteins in PDR annotated with:
   This term: 1 [Search]
   Term or descendants: 1 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0009976 - tocopherol cyclase activity (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle