QUESTION 28Which amino acid is most likely to break an alpha helix?AlanineIsoleucinenone of the choices are correctProlineQUESTION 29If an enzyme has a kcat = 3.3e's-1, Km = 5.9e M, what is its catalytic efficiency? Give your answer in2 significant figures and scientific notationQUESTION 30To determine the molecular weight of a purified protein you subject it to ESI mass spectrometry at pH=2. The spectrumi t aiahbeni aln hain m tianClick Save and Submit to save and submit. Click Save All Answers to save all ansuers.786 Mostly cloudy9 Type here to search

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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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You have discovered a new amino acid that you name in honor of your favorite course. Twofourteeninine has an alpha-amino and an alpha-carboxylic group, and an ionizable side chain that carries an amino group. A titration curve of twofourteeninine is shown below. Net charge a P I 1 2 I 3 4 5 6 pH T 9 10 11 12 13 What are the approximate pKa values of twofourteeninine (to the nearest half-pH unit)? Check all that apply.
Which amino acid is NOT associated with the oligopeptide given by the shorthand notation GRFAV? Valine Phenylalanine Glycine Arginine Aspartic Acid Alanine
Amino Acid 3-Letter 1-Letter Second letter Code Code Alanine Cysteine Aspartic acid or aspartate Glutamic acid or glutamate | Phenylalanine Glycine Histidine Ala Cys Asp Glu UCU Phe UGU cys UGC UUUT UAU Tyr UAC D UUC UC Ser UUA UAA Stop UGA Stop UAG Stop UGG Trp G UCA Phe Leu UUG UCG Gly G H. His Ile CUU CCU CAU CGU U His CAC CÚC Leu CUA CGC CGA Isoleucine Lysine Leucine Pro Arg Lys K CAA Gin CAG CCA Leu L. CUG CCG CG Methionine Met M AUU AUC le ACU) ACC AAU1 AAC AGU Asn Asparagine Proline Glutamine Arginine Serine Asn Ser AGC AGA Arg Pro P. Thr AAA Gln Arg Ser AUA ACA AUG Met ACG AAG Lys AGG R GUU) GCU) GAU1 GGU GGC Gly Threonine Valine Tryptophan Tyrosine Thr GUC Val GUA GCC Ala GCA Val V GAA GAG GGA W Trp Тут Glu GUG GCG GGG Y Apply all that you have learned to solve the following: If you have the following DNA sequence: 5-ATGGCIOTOGTATTAAATAG-3 1. What is the sequence of the bases in the complementary DNA strand in a 3' to 5 direction ?( NB" Just type the letter for the bases) 2.…
Choose from the following. list of amino acids in a protein [ Choose ] antiparallel peptide semiconservative replication tertiary structure hydrogen covalent quaternary structure extremely weak attractive force secondary structure unsaturated fatty acid ionic primary structure alpha helix/beta sheet [ Choose ] antiparallel peptide semiconservative replication tertiary structure hydrogen covalent quaternary structure extremely weak attractive force secondary structure unsaturated fatty acid ionic primary structure two strands of DNA run in opposite directions [ Choose ] antiparallel peptide…
Within a naturally-occurring polypeptide, under neutral pH conditions (pH = 7.0), which of the following amino acids always has a positively charged amine group? (Choose one answer) the first amino acid in the primary structure histidine lysine arginine the last amino acid in the primary structure
If the polypeptide chain CVNIKFDS were in an alpha helix, then the alpha amino group of amino acid D would be in a hydrogen bond with the C=O of Please write letter of amino acid as answer.
You will now build a 15 amino acid peptide using another paper or wire backbone as you did above. You will pick 15 amino acids, matching the criteria below, and put them onto your backbone about 3 inches apart. This will be the primary structure of your novel protein. Select 15 amino acids that meet the following criteria 6 hydrophobic R groups 2 acidic R groups 2 basic R groups 2 cysteine R groups 3 hydrophilic R groups Place the R groups in any order you choose on your paper or wire backbone as you did above. Start at the N-terminus and place each R group about 3 inches apart until all 15 are attached to the mini toolbar. You have just built the primary structure of your protein. Question 1: Record the sequence of amino acids in your protein, starting with the N-terminus. The N-terminus is the end of the polypeptide that has a free nitrogen group. The C-terminus, or carboxyl end, will have a free carboxyl group. You can use the three letter amino acid abbreviation to…
Draw the titration curves for the following AA’s: Aspartic acid, Alanine, Lysine, Valine, Serine, and Trrosine.
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
Answer the following using the structure: a. Is this a purine or pyrimidine? b. Is this a deoxyribonucleotide or a ribonucleotide? c. Indicate the component that changes this from a nucleoside to a nucleotide.
For each amino acid, show the structure, 1-letter abbreviation, 3-letter abbreviation, class (non-polar, polar, positive or negative), special props, side chain pKa)
с" CH2 CH2 "НaN H с. CH С" CH Нзс CHз ZI о-о

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Which amino acid is most likely to break an alpha helix? Alanine Isoleucine none of the choices are correct Proline