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cofactor Definition

co·fac·tor (kō′fak′tər)

noun

  1. any one of two or more factors, the combined effects of which may cause a certain result or condition, esp. a disease
  2. Biochem. an accessory substance, esp. a coenzyme, that must be present for a particular biological reaction to occur

cofactor Usage Examples

Converse of object

  • bind: Although the active site of ASV integrase does not undergo significant conformational changes on binding the required metal cofactor, that of HIV-1 does.

Adjective modifier

  • essential: Zinc is an essential cofactor for the important antioxidant enzyme Superoxide Dismutase.
  • mammalian: Research Projects: The role of PQQ as a mammalian enzyme cofactor and vitamin?

Modifies a noun

  • protein: Human membrane cofactor protein ( CD46 ) acts as a cellular receptor for measles virus.
  • activity: CR1, which has a more limited tissue distribution, also has cofactor activity ( 66 ).

Noun used with modifier

  • membrane: Human membrane cofactor protein ( CD46 ) acts as a cellular receptor for measles virus.
  • enzyme: Research Projects: The role of PQQ as a mammalian enzyme cofactor and vitamin?

Preposition: of

  • oxomolybdoenzymes: The ubiquitous cofactor of the oxomolybdoenzymes, 3, is a major target for our group.

Preposition: for

  • enzyme: Zinc is an essential cofactor for the important antioxidant enzyme Superoxide Dismutase.