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Predict the amino acid sequence based on the conditions below. Use the one-letter abbreviation of amino acids.

Predict the amino acid sequence based on the conditions below. Use the one-letter abbreviation of amino acids.

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Predict the amino acid sequence based on the conditions below. Use the one-letter abbreviation of amino acids. a. The amino acid in the C-terminal is optically inactive. b. The fifth amino acid is a neutral aromatic amino acid that yields a negative result for the Xanthoproteic test using intact protein while producing a yellow soln with Xanthoproteic reagent and yielding a negative result with Hopkin's Cole test using basic hydrolysate. c. Yields serine and a hexapeptide after treatment of aminopeptidase (specificity: peptide bond on the N-terminus). d. The amino acid beside the N-terminal a.a. will yield ornithine and urea after alkaline hydrolysis. e. The third amino acid gives a positive result for Hopkins-Cole Test. f. Chymotrypsin cannot cleave the peptide bond on the fifth amino acid because of the presence of this a.a. residue. g. The amino acid at the carboxy-end of the third a.a. will yield a black precipitate for Pb(Ac)2.
Transcribed Image Text:Predict the amino acid sequence based on the conditions below. Use the one-letter abbreviation of amino acids. a. The amino acid in the C-terminal is optically inactive. b. The fifth amino acid is a neutral aromatic amino acid that yields a negative result for the Xanthoproteic test using intact protein while producing a yellow soln with Xanthoproteic reagent and yielding a negative result with Hopkin's Cole test using basic hydrolysate. c. Yields serine and a hexapeptide after treatment of aminopeptidase (specificity: peptide bond on the N-terminus). d. The amino acid beside the N-terminal a.a. will yield ornithine and urea after alkaline hydrolysis. e. The third amino acid gives a positive result for Hopkins-Cole Test. f. Chymotrypsin cannot cleave the peptide bond on the fifth amino acid because of the presence of this a.a. residue. g. The amino acid at the carboxy-end of the third a.a. will yield a black precipitate for Pb(Ac)2.
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