11 of 25 > © Macmillan Learning Four amino acids are shown. H- COO CH2 SH NH3 H3N لا COO -H H- COO Solution Resources Hint Subm Penalized CH CH2 H3C OH CH2 S + COO NH3 H3N CH3 H CH3 cysteine threonine methionine alanine Identify the amino acids drawn in the L configuration. alanine threonine methionine cysteine

11 of 25 > © Macmillan Learning Four amino acids are shown. H- COO CH2 SH NH3 H3N لا COO -H H- COO Solution Resources Hint Subm Penalized CH CH2 H3C OH CH2 S + COO NH3 H3N CH3 H CH3 cysteine threonine methionine alanine Identify the amino acids drawn in the L configuration. alanine threonine methionine cysteine

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter20: Proteins

Section: Chapter Questions

Problem 20.58EP: For the tripeptide SerValMet a. What amino acid is located at the peptides N-terminal end? b. What...

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Similar questions

Which amino acids could be referred to as derivatives of butanoic acid?
22-91 Which amino acid does not rotate the plane of polarized light?
22-21 Explain why an amino acid cannot exist in an un-ionized form at any pH.
22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they?
What special role does the amino acid cysteine have in the peptides vasopressin and oxytocin?
How many of the -amino acids shown in Table 26-1 contain aromatic rings? How many contain sulfur? How many contain alcohols? How many contain hydrocarbon side chains?
22-44 How can a protein act as a buffer?
Identify the R group of the side chain in the following amino acids that results in the side-chain classification indicated in parentheses see Table 19.1: a. tyrosine neutral, polar b. glutamate acidic, polar c. methionine neutral, nonpolar d. histidine basic, polar e. cysteine neutral, polar f. valine neutral, nonpolar
22-25 Draw the most predominant form of lysine at its isoelectric point.
Give one example of a conjugated protein that contains the following prosthetic group: a.iron b.lipid c.phosphate group d.carbohydrate e.heme
22-71 Which amino acid side chain is most frequently involved in denaturation by reduction?
Using both three- and one-letter codes for amino acids, write the structures of all possible peptides containing the following amino acids: (a) Val, Ser, Leu (b) Ser, Leu2, Pro