16. Describe the basic principles behind the functioning of an amino acid analyzer. What is it? W is it used for? How does it work (start to finish)? 17. In peptide, protein chemistry, what does the term 'sequence' mean? 18. About how many amino acid residues can be in a peptide in order to sequence it by Edman degradation?

16. Describe the basic principles behind the functioning of an amino acid analyzer. What is it? W is it used for? How does it work (start to finish)? 17. In peptide, protein chemistry, what does the term 'sequence' mean? 18. About how many amino acid residues can be in a peptide in order to sequence it by Edman degradation?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

16. Describe the basic principles behind the functioning of an amino acid analyzer. What is it? W-
is it used for? How does it work (start to finish)?
17. In peptide, protein chemistry, what does the term 'sequence' mean?
18. About how many amino acid residues can be in a peptide in order to sequence it by Edman
degradation?

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These are questions regarding hydrogen bonds (...): What are they? What elements can be involved in forming hydrogen bonds? (Hint: check the groups on the right of the periodic table) A. B. C. If hydrogen bonds are so weak (5-7 kcal/mol or 21-29 kJ/mol), how can it be explained that protein structures largely depend on them? (Hint: the two strands of the DNA helix are also stabilized by hydrogen bonds.) D. Briefly illustrate how hydrogen bond interactions may exist (in proteins) between (i) the atoms of two peptide bonds, (ii) the peptide backbone to the side chain of another amino acid; or (iii) side chain to side chain. (Hint: Check Fig. 4-6 of the Alberts et al. text; you may draw a simplified version of this figures)
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