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    HiHi could anybody possibly help please:

    Name 3 substrate level phosphorylations of nucleotide diphosphates to the triphosphates (as opposed to oxidative phosphorylation) in metabolism

    I don't even know what its going on about >.<
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    ADP is a nucleotide- its conversion to ATP is part of the cycle in providing energy through cellular respiration.

    1) In the energy payoff phase in glycolysis,
    two 1,3-bisphosphoglycerate are converted to 3-phosphoglycerate by transferring a phosphate group to ADP

    2) In the Krebs' Cycle, substrate level phosphorylation occurs when succinyl CoA is converted to succinate, again converting ADP to ATP.

    3) Substrate-level phosphorylation is also seen in working skeletal muscles and the brain. Phosphocreatine is stored as a readily available high-energy phosphate supply, and the enzyme creatine phosphokinase transfers a phosphate from phosphocreatine to ADP to produce ATP. Then the ATP releases giving chemical energy. Phosphocreatine, also known as creatine phosphate or PCr, is a phosphorylated creatine molecule that is an important energy store in skeletal muscle.
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    "Name 3 substrate level phosphorylations of nucleotide diphosphates to the triphosphates" ADP to ATP, oxidative phosphorylation would be the ETC, so we're talking Krebs and Glycolysis methinks
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    what about phosphoenolpyruvate to pyruvate?
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    (Original post by Sparrow Hawk)
    what about phosphoenolpyruvate to pyruvate?
    This would be a valid example as the phosphoenolpyruvate releases a PO3- ion to phosphorylate the ADP to ATP
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    thank you for the help everyone =]
 
 
 
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