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15 Cards in this Set
- Front
- Back
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what are the three aa derivatives?
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porphyrin, creatine, NTs
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How is glutamate made?
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from aas through transamination
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How is glutamine made?
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from glutamate
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When is glutamine synthesis shut off?
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when all inhibitors (AMP, trypt, CTP, histadine, glucosamine 6-P, carbamoyl P, glycine, alanine) are present
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How do you know that glutamine synthesase is in its active form?
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it does not have adenyl group attached
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aa can be grouped into how many families?
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6
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Porphyrins are made from which aa?
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glycine
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creatine is synthesized from?
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gly, arg, met
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which nts are made from tyrosine?
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Dopa, NE, E
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which nt is made from glutamate?
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GABA
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which nt is made from tryptophan?
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5-HT
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Which nt is made from histidine?
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histamine
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how do you make CTP?
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UMP phosphorylate to UDP, phosphorylate to UTP then to CTP (to CDP if wanted)
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how are purines (A, G) degraded?
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to uric acid then excreted
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how are pyrimidines (C,T,U) degraded?
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to NH4+ to urea to excretion
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