O AlaNHHThe central bond in this Newman projection (the one whose torsional angle is specified by this drawing) is part of which residue?O AspAsnH₂C.O ArgCH(NH2)CH2CO,H–NHCH(CO,H)CH,CONH,

There are 3 torsional angles in a peptide. Each torsional angle is due to rotation about one…

Answered: O Ala O Asp O Asn H₂C. O Arg O The…

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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Based on the following titration table of Glycine, would you be able to recreate the same for Histidine? Glicina Increasing pH H-N-CH,-COOH -H-N-CH,-co = H-N-CH,-C00- Net charge: +1 pH COOH-pKa = 2.3 NH3-pka = 9.6 CN AEq +1 +1 2.3 (0.5°-1)+(0.5°0)=-0.5 +0.5 0.5 9.6 -1 (0.5*+1)+(0.5°0)=+0.5 -0.5 1.5 14 Given that the pKas for Histidine are the following: pka1 = 1.82 pKa2 = 9.17 pКаз %3 6.00 pL = 7.59 2.
CH;OH НО OH What is the name of this structure? OH OH alpha-D-gulopryranose O beta-L-gulofuransone O alpha-L-gulofuranose beta-D- gulopyranose
Which of the choices show the correct Fischer projection for the amino acid structure shown belaw? H,N- -NH -H- NH;
In the space provided, draw a Haworth projection for the beta anomer of the following monosaccharide Fischer projection. CHO HO-C-H HO-C-H HO-C-H H-C-OH CH,OH
For each of the tripeptide: Tyrosylisoleucylleucine Methionylcysteinylisoleucine 1. Draw the correct structure of each tripeptide clearly identifying the Nand C- terminals 2. Label the amide bonds in your structures
Draw tripeptide Lys-Thr-Glu at pH 7.4 and circle the six atoms that are restricted in the same plane.
In the peptide shown below, a covalent bond that could rotate to form secondary structure is correctly identified / labeled by letter: A B OH still fot D OB OC O O O B D F C OA HN E NH OH "NH₂ - F
Which structure is the correct Haworth representation of a-D-glucopyranosyl-(1-3)-B-D-galactopyranose? он OH но- OH OH OH OH он он он но- но HO OH OH он он OH OH Он OH он OH OÀ D
Draw the Ala-Ser-Leu-Asp polypeptide (perspective formula) showing the fully extended backbone geometry (all angles +/- 180°). Include correct stereochemistry for L-amino acids. Label all bond rotations representing the angles at each residue
H OH CH2OH D H ОН H الحزن ОН CH2OH ОН H ОН I Which of the following statements correctly describes this structure? (A) The monomer units are bonded by beta 1-2 glycosidic linkage. B The monomer units are bonded by alpha 1-2 glycosidic linkage. The monomer units are bonded by alpha 1-4 glycosidic linkage. The monomer units are bonded by beta 1-4 glycosidic linkage. H CH2OH H ОН H ОН H ОН
Consider the structure of the tripeptide (in its fully protonated form) below. H H H + I || H₂N-C-C-N-C-C-N-C-C-OH 1 I | H CH₂ H CH₂ CH₂ T C=O OH AA1 0=0 || HC-CH3 CH3 AA2 AA3 0=C 1. Give the sequence of the tripeptide using the ONE-LETTER DESIGNATION (UPPERCASE LETTER) with NO spaces and symbols between each letter. 2. How many ionizable groups are there in the tripeptide? Give the numerical value (e.g., 10 not ten). • pH 10: {Choices: -2, -1, 0, +1, +2} 3. Which amino acid residue has one ionizable group left upon forming the tripeptide? {Choices: AA1, AA2, AA3, none, all} 4. Give the net charge of the dominant structure of the tripeptide at the given pH values. The pK, values of the amino acids are given in Table 1. • pH 4: {Choices: -2, -1, 0, +1, +2}
The tripeptide abbreviated as Ala-Ser-Val is the same as the tripeptide abbreviated as Val- Ser-Ala. O True O False

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O Ala O Asp O Asn H₂C. O Arg O The central bond in this Newman projection (the one whose torsional angle is specified by this drawing) is part of which residue? N HH CH(NH2)CH,CO,H -NHCH(CO,H)CH,CONH,