Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
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Question
Chapter 24, Problem 22P
Interpretation Introduction
Interpretation:
The amino acid sequence of bradykinin is to be determined.
Concept introduction:
A protein or peptide sequence is formed as a result of the peptide linkage between the amino acids. Further, different chemicals or enzyme may be used in order to decode the sequence of the amino acids, as the chemicals and the enzymes are only able to cleave the peptide sequenced at specific locations.
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Students have asked these similar questions
If the pH of a solution of Arginine is equal to a half of the 3 pka values of all of its functional groups, what will be the charge on the majority of the Arg molecules in that solution? Please explain. Am i supposedd to add up the three pka values and then divide it in half to find the pH? Thanks
Bradykinin is a linear nonapeptide released by blood plasma globulin in response
to a wasp sting. It is a very potent pain-causing agent. Its constituent amino
acids are 2R, G, 2F, 3P, S. The sue of 2,4-dinitrofluorobenzene and
carboxypeptidase shows that both terminal residues are arginine. Partial
hydrolysis of bradykinin gives the following di- and tripeptides:
FS + PGF +PP + SPF + FR + RP
An enzyme catalyzes the hydrolysis of an ester with a
certain activity, but this activity is lost in a 3 M urea
solution. What is the most likely explanation for the loss
of activity?
(A) Urea binds to the active site of the enzyme
competitively with the substrate.
(B) Urea causes the cleavage of the peptide bonds in the
enzyme.
(C) Urea causes the enzyme to denature and lose its
specific three-dimensional shape.
(D) Urea reacts with disulfide bonds in the enzyme.
Chapter 24 Solutions
Organic Chemistry
Ch. 24 - Prob. 1PPCh. 24 - Practice Problem 24.2 The guanidino group NHNHCNH2...Ch. 24 - Prob. 3PPCh. 24 - Prob. 4PPCh. 24 - Prob. 5PPCh. 24 - Prob. 6PPCh. 24 - Prob. 7PPCh. 24 - Practice Problem 24.8
Glutathione is a tripeptide...Ch. 24 - Prob. 9PPCh. 24 - Prob. 10PP
Ch. 24 - Prob. 11PPCh. 24 - Practice Problem 24.12 Show all steps in the...Ch. 24 - Practice Problem 24.13 The synthesis of a...Ch. 24 - Practice Problem 24.14
The terminal carboxyl...Ch. 24 - Prob. 15PPCh. 24 - Prob. 16PPCh. 24 - (a) Which amino acids in Table 24.1 have more than...Ch. 24 - Prob. 18PCh. 24 - 24.19 (a) On the basis of the following sequence...Ch. 24 - Prob. 20PCh. 24 - Prob. 21PCh. 24 - Prob. 22PCh. 24 - Prob. 23PCh. 24 - Prob. 24PCh. 24 - The enzyme lysozyme and its mechanism are...Ch. 24 - Prob. 2LGP
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Similar questions
- A chemically modified guanidino group is present in cimetidine (Tagamet), a widely prescribed drug for the control of gastric acidity and peptic ulcers. Cimetidine reduces gastric acid secretion by inhibiting the interaction of histamine with gastric H2 receptors. In the development of this drug, a cyano group was added to the substituted guanidino group to alter its basicity. Do you expect this modified guanidino group to be more basic or less basic than the guanidino group of arginine? Explain.arrow_forwardThe isoelectric point (pI) of phenylalanine is pH 5.5. Draw the structure of the major form of phenylalanine at pHvalues of 1, 5.5, and 11.arrow_forwardDraw a structural formula for the form of amino acid most prevalent at pH 1.0. (a) Argininearrow_forward
- R3 R1 R4 R2 Which chemical group is a hydrogen-bond acceptor that stabilizes an alpha-helical peptide? O C-O of the main chain O N-H of the main chain O hydroxyl group of side chain R2 O carboxyl group of side chain R2arrow_forwardIndicate whether each statement is true or false. (a) Tryptophan is an aromatic amino acid. (b) Lysine is positively charged at pH 7. (c) Asparagine has two amide bonds. (d) Isoleucine and leucine are enantiomers. (e) Valine is probably more water-soluble than arginine.arrow_forwardThe pKa values of alpha-amino group, carboxylic acid group and the sidechain group of arginine are 9.04, 2.17 and 12,48 respectively. What percentage of arginine molecules would be neutral in a solution of arginine at pH 13?arrow_forward
- A chemically modified guanidino group is present in cimetidine (Tagamet), a widely prescribed drug for the control of gastric acidity and peptic ulcers. Cimetidine reduces gastric acid secretion by inhibiting the interaction of histamine with gastric H, recep- tors. In the development of this drug, a cyano group was added to the substituted gua- nidino group to alter its basicity. Do you expect this modified guanidino group to be more basic or less basic than the guanidino group of arginine? Explain. N-CN H,C CH,SCH,CH,NHËNHCH, HN, Cimetidine (Tagamet)arrow_forwardWhat fraction of the side-chain amine on arginine is protonated at pH=10? At pH = 13? Express as a %. At pH = 10, 0% protonated. At pH = 13,76% protonated. At pH=10, 100% protonated. At pH-13, 76% protonated. At pH= 10, 0% protonated. At pH=13, 24% protonated. At pH-10, 100% protonated. At pH= 13, 24% protonatedarrow_forwardReaction of the a-carboxyl group of an amino acid or peptide with phenylisothiocyanate allows for the determination of the amino acid residue in the N- terminus of an unknown peptide O True O Falsearrow_forward
- Draw a titration curve for the following peptide and circle the region(s) where this peptide would be a good buffer. Label the location on the titration curve where the peptide is least soluble: H-A-I-Yarrow_forwardTreatment of a new protein with dansyl chloride reveals two (2) dansyl-labelled derivatives of amino acids, alanine and methionine. What can you deduce about the structure of the proteinfrom these results?arrow_forwardThe initial pH of a 2M arginine solution is 14. What is the predominant structure of arginine in solution at this pH?arrow_forward
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