cofactor

Cofactor may refer to:

• A domain parameter in Elliptic curve cryptography, defined as the ratio between the order of a group and that of the subgroup
• Cofactor (linear algebra), the signed minor of a matrix
• Minor (linear algebra), an alternative name for the determinant of a smaller matrix than that which it describes
• Cofactor (biochemistry), a substance that needs to be present in addition to an enzyme for a certain reaction to be catalysed
• Shannon cofactor, a term in Boole's (or Shannon's) expansion of a Boolean function

Un cofactor es un componente no proteico, termoestable y de baja masa molecular, necesario para la acción de una enzima. El cofactor se une a una estructura proteica, denominada apoenzima, y el complejo apoenzima-cofactor recibe el nombre de holoenzima.