Holoenzyme: Difference between revisions
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Holoenzyme is a catalytically active [[Enzyme|enzyme]] that consists of [[Apoenzyme|apoenzyme]] and [[Cofactor|cofactor]]. [[Cofactor|Cofactors]] can make reactions that cannot be done by | Holoenzyme is a catalytically active [[Enzyme|enzyme]] that consists of [[Apoenzyme|apoenzyme]] and [[Cofactor|cofactor]]. [[Cofactor|Cofactors]] can make reactions that cannot be done by standard twenty [[Amino acids|amino acids]]. [[Cofactors|Cofactors]] are divided in two groups:<br> | ||
*metals (Zn<sup>2+</sup>, Mg<sup>2+</sup>, Ni<sup>2+</sup> , Mo, Se, Mn, K<sup>+</sup>),<br> | *metals ([[Zinc|Zn]]<sup>[[Zinc|2+]]</sup>, [[Magnessium|Mg]]<sup>[[Magnessium|2+]]</sup>, [[Nickle|Ni]]<sup>[[Nickle|2+]]</sup> , [[Molybdenum|Mo]], [[Selenium|Se]], [[Manganese|Mn]], [[Potassium|K]]<sup>[[Potassium|+]]</sup>),<br> | ||
*[[Coenzyme|coenzymes]]. | *[[Coenzyme|coenzymes]]. | ||
Use of the same coenzyme usually means that enzymes catalyse similar mechanisms | Use of the same [[Coenzyme|coenzyme]] usually means that [[Enzyme|enzymes]] catalyse similar mechanisms <ref>Berg J., Tymoczko J and Stryer L. (2007) Biochemistry, 6th edition, New York: WH Freeman, p207</ref>.<br> | ||
<br> | |||
=== '''References'''<br> === | === '''References'''<br> === | ||
Revision as of 16:11, 28 November 2010
Holoenzyme is a catalytically active enzyme that consists of apoenzyme and cofactor. Cofactors can make reactions that cannot be done by standard twenty amino acids. Cofactors are divided in two groups:
Use of the same coenzyme usually means that enzymes catalyse similar mechanisms [1].
References
- ↑ Berg J., Tymoczko J and Stryer L. (2007) Biochemistry, 6th edition, New York: WH Freeman, p207