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Biochem block 3, wk 2-Dietary AA and AA degradation 1
Med school biochem
18
Biochemistry
Graduate
10/28/2010

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Cards

Term
What enzyme is defective in juvenile Parkinson's?
Definition
Parkin- an E3-ubiquitin-ligase
Term
What does the HPV virus do?
Definition
encodes an E3-ubiquitin ligase that targets p53 for degradation
Term
What is defective in Huntington's and what does it due
Definition
defective htt protein binds to proteasomes and inhibits degradation of other proteins which accumulate and cause neurodegeneration
Term
What do parietal cells of stomach release
Definition
HCl
Term
what do chief cells of stomach release
Definition
pepsinogen
Term
Where does trypsin cleave
Definition
after basic AA's
Term
Where does elastase cleave cleave
Definition
after small AA's
Term
Where does chymotrypsin cleave
Definition
after cyclic, aromatic AA's
Term
Three AA's used for 10% of nrg for extrahepatic tissues
Definition
valine, leucine, and isoleucine
Term
Phenylalanine hydroxylase
Definition
converts phenylalanine to tyrosine
Term
What enzyme do phenylketonuria (PKU) patients use to metabolize phenylalanine
Definition
aminotransferase; converts pyruvate to alanine in process
Term
tyrosine aminotransferase- deficiency
Definition
1. tyrosine--> p-hydroxyphenylpyruvate; deficient in type II tyrosinemia
Term
p-hydroxyphenylpyruvate dioxygenase-deficiency
Definition
2. p-hydroxyphenylpyruvate--> homogentisate; deficient in type III tyrosinemia
Term
homogentistate 1,2-dioxygenase- deficiency
Definition
3. homogentistate-->maleylacetoacetate; deficient in alkaptonuria
Term
Maleylacetoacetate isomerase
Definition
4. Maleylacetoacetate--> fumarylacetoacetate
Term
fumarylacetoacetase- deficiency
Definition
5. Fumarylacetoacetate--> acetoacetate; deficiency in type I tyrosinemia
Term
3-ketoacyl-CoA transferase
Definition
6. acetoacetate--> acetoacetyl-CoA
Term
Cause of maple syrup urine disease
Definition
branched-chain alpha-ketoacid dehydrogenase
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