[Protein-analysis] Re: Question about enzymes
(by twic from urchin.earth.li)
Thu Oct 19 12:34:15 EST 2006
On Wed, 18 Oct 2006, Marvin wrote:
> yubbers9 from yahoo.com wrote:
>> I'm taking an introductory biology course, and I've been told that
>> enzymes always have only one active site.
> An enzyme is often made up of two or more protein, held together by zinc
Er, or by other things, principally the hydrophobic effect. Any particular
reason why you mention zinc?
> It is not uncommon to have two active sites for the same substrate
> compound, and the two sites can interact, so that what is happening at
> one site affects the other site.
Very true - this is known as 'cooperativity', and is a key concept in
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