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7 Cards in this Set

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Paris of alpha-ketoglutarate/glutamate transferases:

transfer an amino group from amino acid (glutamate or alanine) to alpha-ketoglutarate.
Product: oxaloacetate or pyruvate + glutamate.
what happens to glutamate after it is formed from aminotransferase:

what enzyme?
Oxidative deamination.
2 steps:
1. take off H, form schiff base
2. hydrolyze schiff base - produce NH4+ and a-ketoglutarate
Enzyme: glutamate dehydrogenase
What prosthetic group is required for aminotransferases:
vitamin b6 cofactor:
pyridoxal phosphate in equilibrium wiht pyridoxamine phosphate
ketogenic amino acids
degradation produces acetyl CoA or acetoacetyl CoA and can only give rise to ketone bodies or fatty acids. (not glucose)
glucogenic amino acids
amino acids that degrade down to precursors of phosphoenolpyruvate to then make glucose.
Ex., pyruvate, a-ketoglutarate, succinyl coA, fumarate, oxaloacetate,
Can mammals directly synthesize glucose from acetyl coA or acetoacetyl coA?