• unknownunknown
Biochemistry: The opening sentence in this wikipedia article turns on its head my understanding of the definition of Allosteric regulation - http://en.wikipedia.org/wiki/Allosteric_regulation "In biochemistry, allosteric regulation (or allosteric control) is the regulation of a protein by binding an effector molecule at a site other than the protein's active site." What about O2 binding to heme in hemoglobin. This is a binding at the active site that induces positive allosteric modulation at the remaining heme groups. Is this not a contradiction to the wikipedia article?
  • katieb
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  • aaronq
Hemoglobin is not an enzyme - but a transport protein - no reaction occurs at heme groups, thus they are not active sites.

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