Amino Acids in biochemistry, Now try to learn via poetry... Arginine If alanine�s two carbons more extended, And a guanido�s to the end appended, A compound�s formed which arginine we call� Most base amino acid of them all; For the guanido group has pK high; At nearly 12.5 it�s known to lie. (Now the guanido group, my freshmen friends, Is but a C surrounded by three N�s.) A liver enzyme, arginase by name, Does act on arginine and cleaves the same By hydrolysis, for water comes between, To yield urea and also ornithine. The latter converts back to arginine By a complex, but key, reaction scheme In which excess ammonia is consumed, Except for this the cell were surely doomed. Thus arginine�you should remember this� Is source of the urea in your piss. Credit: The University of Minnesota
Posted on: Fri, 14 Jun 2013 01:59:57 +0000
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