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The chemical reactions and pathways involving vitamins. Vitamin is a general term for a number of unrelated organic substances that occur in many foods in small amounts and that are necessary in trace amounts for the normal metabolic functioning of the body. Vitamins may be water-soluble or fat-soluble and usually serve as components of coenzyme systems. The chemical reactions and pathways involving of any of a diverse group of vitamins that are soluble in organic solvents and relatively insoluble in water. The chemical reactions and pathways involving small molecules, any monomeric molecule of small relative molecular mass. The chemical reactions and pathways resulting in the breakdown of any of the forms of vitamin K, quinone-derived vitamins which are involved in the synthesis of blood-clotting factors in mammals. The chemical reactions and pathways resulting in the formation of any of the forms of vitamin K, quinone-derived vitamins which are involved in the synthesis of blood-clotting factors in mammals. The chemical reactions and pathways involving any of a class of organic compounds that contain the carbonyl group, CO, and in which the carbonyl group is bonded only to carbon atoms, as carried out by individual cells. The general formula for a ketone is RCOR, where R and R are alkyl or aryl groups. The chemical reactions and pathways involving any of the menaquinones, quinone-derived compounds synthesized by intestinal bacteria. Structurally, menaquinones consist of a methylated naphthoquinone ring structure and side chains composed of a variable number of unsaturated isoprenoid residues. Menaquinones have vitamin K activity and are known as vitamin K2. The chemical reactions and pathways involving a cofactor, a substance that is required for the activity of an enzyme or other protein. Cofactors may be inorganic, such as the metal atoms zinc, iron, and copper in certain forms, or organic, in which case they are referred to as coenzymes. Cofactors may either be bound tightly to active sites or bind loosely with the substrate. The chemical reactions and pathways involving quinone cofactors. The chemical reactions and pathways by which individual cells transform chemical substances. The chemical reactions and pathways involving any of the forms of vitamin K, quinone-derived vitamins which are involved in the synthesis of blood-clotting factors in mammals. Vitamin K substances share a methylated naphthoquinone ring structure and vary in the aliphatic side chains attached to the molecule. The chemical reactions and pathways involving phylloquinone, a quinone-derived compound synthesized by green plants. Phylloquinone has vitamin K activity and is known as vitamin K1.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: vitamin K metabolic process
Acc: GO:0042373
Aspect: Biological Process
Desc: The chemical reactions and pathways involving any of the forms of vitamin K, quinone-derived vitamins which are involved in the synthesis of blood-clotting factors in mammals. Vitamin K substances share a methylated naphthoquinone ring structure and vary in the aliphatic side chains attached to the molecule.
Synonyms:
  • naphthoquinone metabolic process
  • vitamin K metabolism
  • naphthoquinone metabolism
Proteins in PDR annotated with:
   This term: 8 [Search]
   Term or descendants: 114 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0042373 - vitamin K metabolic process (interactive image map)
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