Which one of the following contains the stronger acid, the protonated side chain of Arginine, or the protonated side chain of Lysine? Provide the resonance structures of the Arginine side chain and compare them to the Lysine side chain to explain why.
Which one of the following contains the stronger acid, the protonated side chain of Arginine, or...
Consider a protein with the acidic side chains, Amino Acid side-chain Arginine pKa = 12.48 Aspartic Acid PKa = 3.90 Cysteine pKa = 8.33 Glutamic acid pKa = 4.07 Histidine pKa = 6.04 Lysine pKa =10.79 Tyrosine pKa =10.13 Given that the pH of blood is about 7.3, how many of the above side chains would be mostly in their ionic form (A-) in blood? 2 3 4 5
Enzyme B has two arginine amino acid resídues that are responsible for catalysis. For catalysis one arginine side chain is protonated and one is deprotonated. What is the optimal pH for Enzyme B activity? 2 4 6 10 12 please show
6. Which of the following amino acid residues would provide a side chain capable of increasing the hydrophobicity of a binding site? A) aspartic acid B) lysine C) isoleucine D) arginine E) serine 7. Consider a hypothetical hemoglobin with a Hill coefficient of 1 and the same pso value as normal hemoglobin. Choose the statement below that best describes the two proteins. A) There is a cooperative interaction between oxygen-binding sites in both the hypothetical and normal hemoglobins. B) The...
1. Nile Blue in acid solution is a protonated imine with a pKa 10.1. Most protonated imines have pKa values of 7-8. raw structures for the conjugate acid of nile blue and use them to explain why it is less acidic than a typical imine.
1. On reaction with acid, 4-pyrone is protonated on the carbonyl-group oxygen to give a stable cationis product. Using resonance structures and the Hückel 4n+ 2 rule, explain why the protonated product is so stable. 10:
26. Which of the following classification does not match the amino acid side chain A) Contains an basic group/ lysine B) It is polar C) Forms disulfide bond/ cysteine D) Forms hydrogen bonds with neighbors/ alanine serine 27. All amino acids found in proteins are L-amino acids EXCEPT the achiral. A) glutamate B) Lysine C) glyeine D) Alamine 28. The plH at which the positive and negative charges of an amino acid balance each ofher is called the A) isotonic...
Which is a stronger acid? Must explain with both, words and
structures.
Which is a stronger base? Must explain with both, words and
structures.
. Propose a mechanism for the following reaction:
2. a) Which is a stronger acid? Must explain with both, words and structures.10 pts. LOH OH 8 or b) Which is a stronger base? Must explain with both, words and structures. 5 pts. 3. Propose a mechanism for the following reaction: 15 pts. OH CH, CH H2SO4...
What is the one-letter code for the amino acid that has a side chain that contains a secondary alcohol? T K A E G Correct answer is T What is the one-letter code for the amino acid that has a methyl group as its side chain? E A T G K Correct answer is A
Predict which acid is stronger
(circle it) and use chemical structures to explain why.
I am assuming I did not pick the right acid because I got this
question wrong. Please explain.
This molecule has more resonance
Determine the stronger acid in each of the following resonance structures. Tohowing pairs. Explain your answer and draw all relevant is plain your answer anderas 35 Qo- SON O-A- $=; resonance nybrid This is more strong acid becavae more Valid resonance Oy Structures OH ON NOZ (hint: draw out the structure of NO:) more valid resonanie po stronger acid