lecture0224audio - activator molecules for some enzymes...

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Allosteric inhibition A form of non- competitive inhibition. Seen especially in multi-subunit  enzymes, made of  “catalytic subunits”  and a “regulatory subunits”  A small inhibitor molecule binds to a site  on the regulatory subunit Change in regulatory subunit’s  conformation is coupled to a change in  the catalytic subunit’s conformation that  inhibits catalytic efficiency Can also have allosteric 
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Unformatted text preview: activator molecules for some enzymes. Phosphorylation – enzyme cascades Phosphorylation of enzymes at specific sites, by specific kinases can also stimulate or inhibit their activity. Allows one enzyme, a kinase, to regulate another chains (cascades) of regulated enzymes (kinases), each one being switched on by the previous one in the chain...
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  • Spring '10
  • richard
  • Enzymes, Enzyme inhibitor, catalytic subunit, non competitive inhibition, regulatory subunit Change, small inhibitor molecule, allosteric activator molecules

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