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Holoenzyme is a catalytically active [[Enzyme|enzyme]] that consists of [[ | 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 standart twenty [[Amino acids|amino acids]]. 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 (Zn<sup>2+</sup>, Mg<sup>2+</sup>, Ni<sup>2+</sup> , Mo, Se, Mn, K<sup>+</sup>),<br> | ||
*[[ | *[[Coenzyme|coenzymes]]. | ||
Use of the same coenzyme usually means that enzymes catalyse similar mechanisms. <ref>Berg J., Tymoczko J and Stryer L. (2007) Biochemistry, 6th edition, New York: WH Freeman, p207</ref><br> | Use of the same coenzyme usually means that enzymes catalyse similar mechanisms. <ref>Berg J., Tymoczko J and Stryer L. (2007) Biochemistry, 6th edition, New York: WH Freeman, p207</ref><br> | ||
<br> | <br> | ||
=== '''References'''<br> === | === '''References'''<br> === | ||
<references /><br> | <references /><br> | ||
<br> | <br> | ||
Revision as of 12:49, 28 November 2010
Holoenzyme is a catalytically active enzyme that consists of apoenzyme and cofactor. Cofactors can make reactions that cannot be done by standart twenty amino acids. Cofactors are divided in two groups:
- metals (Zn2+, Mg2+, Ni2+ , Mo, Se, Mn, K+),
- coenzymes.
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