Concept explainers
Interpretation:
The structures of the most abundant form of arginine in solutions whose pH values are 1, 4, 8. 10, and 14 are to be drawn.
Concept introduction:
The general form of an
The pH of the solution determines whether the two
The most acidic proton in an
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Organic Chemistry: Principles and Mechanisms (Second Edition)
- In a typical amino acid zwitterion, the carboxylate end is O neutral O attached to an amine O positively charged soluble in a nonpolar solvent O negatively charged « Previousarrow_forward(b) Describe how the charge of some amino groups in a protein might differ at pH 9.0 and pH 5.0. the charge on the amino group will differ at pH 5 and pH 9 which will depend on the pKa of the amino acid. (c) Describe how the charge of some carboxyl groups in a protein might differ at pH 9.0 and pH 5.0. charge on carboxyl group will differ at pH 5 and pH 9 which will depend on the pKa of the amino acid. (d) Given your answers to parts (b) and (c), what kind of intramolecular interactions in beta-galactosidase are most likely to be affected by a change in pH from 9.0 to 5.0? (e) Could the interactions you mention in part (d) affect the catalytic activity of beta-galactosidase?arrow_forwardProvide detailed explanation of this question. pleasearrow_forward
- Which of the following amines can be used to resolve a racemic mixture of amino acids?arrow_forwardAnswer the following problem and show your complete solution for better understandingarrow_forwardCompounds with polyfunctional groups must follow priority rule. Which of the following compound is correctly named. Justify your claim and construct its correct structure. Compound A: 3-amino-7-carboxy-4-oxoheptanamide Compound B: 3-amino-7-carbamoyl-4-oxoheptanoic acid Compound C: 3-amino-4-ox0-7-carbamoylheptanoic acid Compound D: 3-amino-4-oxo-7-carboxyheptanamidearrow_forward
- Ok, I understand that but how does organic compounds in the acid allow it to function as a pigment.arrow_forwardComplete the structures of these two am ino acids at the pH values given. Explain why the structures change at different pH values. ÇH3 H2N- -COOH H2N-C СООН H H alanine glycine at pH 1 at pH 7 at pH 14arrow_forwardBased from the table, draw the most protonated structure for tripeptife ILYarrow_forward
- Tyrosine is a triprotic weak acid, with pKa1=2.41, pKa2=8.67, and pKa3=11.01. a) calculate the final [OH-] of a solution that starts with .3OM of the fully basic form. Do not assume the concentration of base is constant. b) at what pH range(s) would tyrosine act best as a buffer? c) calculate the pH of a solution at equilibrium which started with 0.043M at the monoprotonated H2A- form *Please show all work and not just answers, I'm looking to understand how to solve problems like these! TIAarrow_forward(B) Choose the more acidic member of the following pair of isomers. Justify your answer. HO. HO. 어 H or Harrow_forwardAnswer the following problem and show your complete solutions and explanation for better understanding.arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningOrganic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning