Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 3, Problem 9TYPSS
Summary Introduction
To review:
Based on information about the peptide bonds that link together amino acid residues, the reason behind side chain containing proline reduced the flexibility of the backbone.
Introduction:
Proline is the amino acid where the alpha-amino group is attached directly to the side chain, making the alpha carbon a direct substituent of the side chain.
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What type of noncovalent interaction occurs between the glutamine and threonine side chains? Draw the structures of these amino acids to show the interaction.
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Chapter 3 Solutions
Biological Science (6th Edition)
Ch. 3 - 1. What two functional groups are bound to the...Ch. 3 - 2. What type of bond is directly involved in the...Ch. 3 - What type of information is used to direct...Ch. 3 - 4. What is an active site?
a. the location in an...Ch. 3 - Prob. 5TYUCh. 3 - Prob. 6TYUCh. 3 - 7. Why are proteins not considered to be a good...Ch. 3 - Prob. 8TYUCh. 3 - Prob. 9TYPSSCh. 3 - 10. Make a concept map (see BioSkills 12) that...
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- Over time, the glutamine residues of polypeptides are susceptible to deamidation, a reaction in which the amide group is replaced by a carboxylate group. What amino acid is produced when glutamine is deamidated?arrow_forwardWhich functional group(s) shown above is (are) present in all amino acids?arrow_forwardName and draw the structure of two charged amino acidsarrow_forward
- Valine is an amino acid with a nonpolar side chain and serine is one with a polar side chain. Draw the two amino acids.(a) Why is the side chain for valine nonpolar, whereas the side chain for serineis polar?(b) Which amino acid has a hydrophilic side chain and which has a hydrophobic sidechain?arrow_forwardPredict the geometry around each carbon atom in the amino acid alanine.arrow_forwardWhat is the advantage of having an amino acid that’s hydrophobic? Please explain using an example.arrow_forward
- which two amino acid have two chiral center？ I know Isoleucine contain two chiral center，how about another AA？arrow_forwardAn octapeptide composed of four repeating glycylalanyl units has ___. A. one free amino group on the glycyl residue and one free carboxyl group on a alanyl residue B. two free carboxyl groups, both on the glycyl residues C. two free amino groups, both on alanyl residue she D. one free amino group on the alanyl residue and one free carboxyl group on a glycyl residuearrow_forwardIs it possible to form cyclic peptides without bonds between side chains of the component amino acids?arrow_forward
- Which amino acid has the possibility of forming inter or intra polypeptide chain covalent bonds?arrow_forwardWhich amino acid (also called amino acid residue)would be more likely to occur on the surface of a protein: an aspartate residue or a methionine residue? Explain your choice.arrow_forwardWould the presence of a chiral center in an amino acid side chain affect the formation of a peptide bond?arrow_forward
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