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28 Nov 2019

14- Intermediates in the urea cycle include all of the following except

a) lysine.

b) ornithine.

c) arginine.

d) citrulline.

e) carbamoyl phosphate

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Beverley Smith
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28 Nov 2019

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Related questions

16. Carbamoyl phosphate synthetase I:

A. is a flavoprotein.

B. is controlled primarily by feedback inhibition.

C. is unresponsive to changes in arginine.

D. requires N-acetylglutamate as an allosteric effector.

E. requires ATP as an allosteric effector.

Consider some isotopic labeling problems. Individual 15N-labeled amino acids are administered into a mouse. Researchers want to follow where the NMR-active Nitrogen appears in the different urea cycle steps occurring in the liver. Draw structures for the following products and indicate where the label would be located.

a) 15N-labeled glutamate is administered. Where does the 15N-label appear on citrulline?

b) 15N-labeled aspartate is administered. Where does the 15N-label appear on urea?

c) 15N-labeled glutamine is administered. Where does the 15N-label appear on arginine?

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