Select the correct representation of this aminoacid in aqueous solution at the stated pH values.pKa (a-CO₂H) = 2.20pK₂ (α-NH₂) = 9.11pKa (side chain OH) = 10.07pl = 5.63HOLont out on onOHOHNH₂NH₂NH₁HONH₂BDat pH 1HONH₂of of anOHNH₂NH₂NH3OEFGat pH 9.59at pH 13.at pH 5.63 (the isoelectric point)HOOHHO[Choose ][Choose ][Choose ][Choose ]anNH3HOH

Answered: Image /qna-images/answer/a2b7422c-18e4-408e-aff0-4c32b533a0d1.jpg

Select the correct representation of this aminoacid in aqueous solution at the stated pH values. pk, (a-CO₂H) = 2.20 pK, (a-NH₂) = 9.11 pK, (side chain OH) = 10.07 pl = 5.63 on NH₂ A HO HO at pH 1 HO at pH 9.59 E at pH 13 OH one or OH NH₂ NH3 NH₂ at pH 5.63 (the isoelectric point) HO НО OH and on an NH₂ NH₂ NH₂ B D F [Choose ] [Choose ] [Choose ] [Choose ] QO orl NH₂ NH₂ O OH H

Select the correct representation of this aminoacid in aqueous solution at the stated pH values. pk, (a-CO₂H) = 2.20 pK, (a-NH₂) = 9.11 pK, (side chain OH) = 10.07 pl = 5.63 on NH₂ A HO HO at pH 1 HO at pH 9.59 E at pH 13 OH one or OH NH₂ NH3 NH₂ at pH 5.63 (the isoelectric point) HO НО OH and on an NH₂ NH₂ NH₂ B D F [Choose ] [Choose ] [Choose ] [Choose ] QO orl NH₂ NH₂ O OH H

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Net Charge on an Amino Group.The amino acid glycine has hydrogen as its side-chain (R) group. Values of pKca= 2:36 and pKaa=9:56 have been previously reported for glycine. Superscripts c, a, and s refer to a-carboxylic acid, α-amino base, and side chain, respectively. Using these values, determine the net charge on the a-amino group of glycine at a physiologic pH of 7.2 and a pH of 3 [70].
Identify the part of a generic amino acid that reacts with base and the part that reacts with acid. Briefly explain your answer.Hint: Draw Lewis structures for ammonia (NH 3) and acetic acid (CH 3COOH).
For the amino acid alanine, the major species in solution at pH 7 is the zwitterionic form, which has a negatively charged carboxylic acid group and a positively charged amino group. There is a less common neutral form in which neither group is charged. The carboxylic acid group of alanine has a p?a of 3 The amino group of alanine has a p?a of 8 Estimate the ratio of the concentration of the neutral amino acid species to the zwitterionic species at pH 7. __?__x10^?
[References] For each structure on the left, pick an identification on the right. Clear All H,N CH- CH- CH2 amino acid dipeptide HO-C-(CH2-C-CH dicarboxylic acid NH2- (CH-)6 NH2 diamine OH HN CH
4 An aqueous solution of an amino acid with a dissociable side chain is found to have the following side chain ratio at pH 4.0: K=[A- ]/[HA]=0.01. What is the identity of the amino acid?
Draw the positively charged, neutral, and negatively charged forms for the amino acid glycine. Which species predominates at pH 11? Which species predominates at pH 1?
Indicate whether each statement is true or false. (a) Thesequence of amino acids in a protein, from the amine endto the acid end, is called the primary structure of the protein.(b) Alpha helix and beta sheet structures are examplesof quaternary protein structure. (c) It is impossiblefor more than one protein to bind to another and make ahigher order structure.
For the amino acid alanine, the major species in solution at pH 7 is the zwitterionic form, which has a negatively charged carboxylic acid group and a positively charged amino group. There is a less common neutral form in which neither group is charged. The carboxylic acid group of alanine has a p?apKa of 3.3. The amino group of alanine has a p?apKa of 8.8. Estimate the ratio of the concentration of the neutral amino acid species to the zwitterionic species at pH 7.
All amino acids have two ionizable functional groups: an a-amino group (average pK, of 9.4) and an a-carboxylic acid group (average pK, of 2.2). Tyrosine also has an ionizable side chain (R group) with a pK, of about 10.1. One of the possible ionization states of tyrosine is shown. H3N-CH -C-OH CH2 ÓH At what pH would the structure be the predominant ionization state? Consider the ionization state of all three of the functional groups. The protonated form of the R group of tyrosine is shown in the structure. The ratio of the protonated form to the charged (deprotonated) form depends on the pK, of the R group and the pH of the solution. Select the pH value at which the charged form of the R group would predominate.
The protein neuroglobin has a heme group associated with it. It is an example of a Ο Ο Ο Ο Ο Ο lipoprotein nucleoprotein glycoprotein phosphoprotein O metalloprotein Ⓒhemoprotein
3a) Consider a tripeptide (a peptide that's only 3 amino acidslong) composed of one molecule each of lysine, leucine, and thehypothetical amino acid lupine (which doesn't actually exist, sodon't try to look it up). Lupine has an ionizable side group with apa of 6.3. When this tripeptide is dissolved in an aqueoussolution at pH 5.0, the net charge on the molecule is +2. Givethe charge on the protonated form of the lupine side group, andthe charge on the deprotonated form of the lupine side group.show your work or explain how you determinedthe charge on each form of the lupine side groups
Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar using the dropdown on the right. NH3 CH₂ I CH₂ CH₂ I CH₂ H₂N-C-COO H Lysine Amino Acid A CH₂ CH₂ H₂N-C-COO H Glutamic Acid Amino Acid D Amino Acid B (Alanine) CH3 H₂N-C-COO Amino Acid A (Lysine) H Alanine Amino Acid B CH3 HCOH H₂N-C-COO H Threonine Amino Acid E Choose [Choose OH CH₂ H₂N-C-COO H Serine Amino Acid C CH3 CH3 CH H₂N-C-COO H Valine Amino Acid F