Which of the following is true about a peptide bond:Electron delocalization occurs between the a-amino group of one residue and the a-carbon ofthe subsequent residueThe peptide bond is freely rotatable along its bond axisThe peptide bond contains 5 co-planar atomsDehydration to link two residues occurs due to thermodynamic coupling to high-energyphosphate hydrolysisNone of the answers are correct

A peptide bond is formed between the α-nitrogen atom of one amino acid and the carbonyl carbon of…

Answered: Which of the following is true about a…

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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Reductase is the Fe protein composed of two: polypeptide chains linked by three disulfide bonds. polypeptide chains linked by a 4Fe–4S cluster. α subunits and two β subunits. polypeptide chains linked by a 2Fe–2S cluster.
The The interconversion between the two forms of guanine base shown below is called form of guanine is the one shown on the left and the from is shown on the right. H. N. H. N. H. N. H. но tautomeric shift; amino; imino deamination; amino; deaminated alkylation; alkylated; hydroxylated tautomeric shift; keto; enol oxidation; reduced; oxidized
Which of the following is true about the amino acid A? Click all that apply. Ois considered hydrophobic Charge of-1 at pH=7.0 contains a acidic side chain O side chain can form H-bonds Charge of O at pH= 7.0
Would each of the following ions of serine exist at a pH above, below, or at its pI? Drag the appropriate items to their respective bins. Above pl H₂N-CH-COO CH₂OH H₂N-CH-COOH CH₂OH Below pl H₂N-CH-COO CH₂OH At its pl Reset Help
Your friend has discovered a protein that they suspect is glycosylated. They decide to perform a series of tests to determine the nature of the oligosaccharide. Assuming/Knowing the following: Fucose molecular weight is approximately 164 Galactose molecular weight is approximately 180 GalNAc molecular weight is approximately 221 Mannose molecular weight is approximately 180 Sialic Acid molecular weight is approximately 309 Neuraminidase cleaves before a Sialic Acid (Sialic Acid and anything after leaves the protein) Beta-galactosidase cleaves after a Galactose (Galactose and anything before remains on the protein) Peanut Agglutinin binds to GalNAc Concanavalin A binds to Mannose Hemagglutinin binds to Sialic Acid Based on preliminary results, they suspect that the oligosaccharide is 7 glycosides long and weighs a total of 1414 g/mol They carried out the following experiments: they treated the protein with either a glycosidase or a lectin, and then pelleted the protein using…
Which of the following criteria must be met for a side chain protecting group to be considered orthogonal to the backbone amine protecting group in SPPS? It should be soluble in water. It should react with HOBT it should be stable at conditions in which the backbone amine protecting group is labile it should be labile at conditions in which the backbone amine protecting group is labile
Bromelain is a protease, therefore it breaks down the polymer ________ releasing __________ monomers as seen above. This is a ________ type of reaction. List of answers: sucrose fructose dipeptide amino acid polysaccharide glycolipids glucose polypeptide hydrolysis maltose primary protein galactose disaccharide dehydration synthesis lactose glycoproteins ribose deoxyribose nucleotide
Create an oligopeptide via dehydration synthesis using the following amino acids. O. H Tryptophan (TRP) C-C-N но сн, C-C-N. но Glycine (GLY) H H HN
Which of the following statements is TRUE for nonpolar amino acid residues of polypeptides or proteins in an aqueous solution? None of the above They are hydrophilic and found buried within proteins They are hydrophilic and found on protein surfaces They are hydrophobic and found on protein surfaces They are hydrophobic and found buried within proteins
Draw the structures of the amino acids formed at physiological pH when the tripeptide below is hydrolyzed. H H O H H O H H O | + || H -N N H HC. CH2 CH2 HC H₂C H₂C OH HC CH CH NH₂ Click and drag to start drawing a structure.
Which of the following regarding disulfide bonds is/are true? Disulfide bonds are the most common intrachain covalent linkage in proteins Disulfide bond formation is critical for correct protein folding into the native conformation Disulfide bonds impart a large degree of stability to the secondary structure of proteins The intracellular environment is too oxidizing to allow disulfide bond formation A and D
Which of the following enzymes creates a covalent bond that links amino acids in a polypeptide? Protein disulfide isomerase Hsp70 Peptidyl-prolyl isomerase Calreticulin

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