Homework Answers
This problem is based on the concept of amino acids found in the catalytic triad of chymotrypsin.
A catalytic triad is a type of catalyst which functions at the active site’s center of various enzymes like protease.
Chymotrypsin is a serine protease. It is an enzyme which regulates the breakdown of proteins and polypeptides.
Catalytic triad is a combination of amino acids which function altogether at the center of an active within an enzyme. it contains usually three amino acids. Therefore, it can neither be an enzyme-cofactor-intermediate complex nor the enzyme-cofactor-substrate complex.
The correct definition chymotrypsin is given below:
Catalytic triad of chymotrypsin is,
‘the amino acids serine, histidine and aspartate.
Ans:Catalytic triad of chymotrypsin is,
‘the amino acids serine, histidine and aspartate.
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What is the catalytic triad of chymotrypsin, a type of serine protease? the enzyme-cofactor-intermediate complex the...
The chymotrypsin catalytic triad contains one Histidine and one Serine residue. Explain, in some detail and...
The chymotrypsin catalytic triad contains one Histidine and one Serine residue. Explain, in some detail and in chemical terms, how an a) a Histidine to Alanine mutation, and b) a Serine to Cysteine mutation in the chymotrypsin catalytic triad might affect catalytic activity of this enzyme.
Trypsin, chymotrypsin, and elastase are all serine proteases that cleave after different amino acids. What is...
Trypsin, chymotrypsin, and elastase are all serine proteases that cleave after different amino acids. What is responsible for the substrate specificity? Choose one: A. Different amino acids involved in the catalytic triad OB. Each protease is made in a different cell type. C. The substrate binding pockets accommodate different amino acids. D. Different catalytic mechanisms
protease action of Chymotrypsin as a model of a specific type of enzyme mechanism. Answer the...
protease action of Chymotrypsin as a model of a specific type of enzyme mechanism. Answer the following questions about chymotrypsin. List the residues involved in the “catalytic triad”: What is the specificity of Chymotrypsin? (where does it cut) What type of protease is Chymotrypsin? What type of general enzyme mechanism is used by chymotrypsin? What is the oxyanion hole used for? Briefly outline the steps in catalysis for the enzyme.
The structure of the active site of chymotrypsin is shown below. The catalytic triad shown (Ser...
The structure of the active site of chymotrypsin is shown below. The catalytic triad shown (Ser 195, His 57, and aspl02) are shown. A peptide with a phenylalanine is shown bound in the active site. 1. Chymotrypsin is a serine protease. The Km for chymotrypsin with N-acetylvaline ethyl ester is 8.8 X 102 M. The Km for the reaction with N-acetyltyrosine ethyl ester is 6.6 X 10 (a) Which substrate has the higher affinity for this enzyme? (b) Give a...
Establish the function of each of the catalytic triad in serine protease, and discuss how they...
Establish the function of each of the catalytic triad in serine protease, and discuss how they interact.
33, 48 Depicted below are a peptide substrate and the three catalytic residues within the chymotrypsin...
33, 48
Depicted below are a peptide substrate and the three catalytic residues within the chymotrypsin active site Note that the 2-dimensional geometry is only roughly shown. R1 represents a large hydrophobic amino acid and R represents other amino acids. The R groups of the catalytic triad of aspartate (Asp102), serine (Ser195), and histidine (His57) are shown. Select the atoms that act as nucleophiles and electrophiles in the acylation phase of the reaction Scroll down for more of this question...
Which of the following amino acid residues are often involved in proton transfers in enzyme-catalyzed reactions?...
Which of the following amino acid residues are often involved in proton transfers in enzyme-catalyzed reactions? Select one: Histidine, aspartate, lysine, and serine Histidine, aspartate, glutamate, arginine, and lysine. Glutamine, asparagine, lysine, and tyrosine Histidine, aspartate, serine, and cysteine Serine, tyrosine, arginine, and cysteine
Anyone can help me with it? Compare and contrast serine proteases and aspartic proteases. Not all...
Anyone can help me with it?
Compare and contrast serine proteases and aspartic proteases. Not all answers will be used. Serine protease Both Aspartic protease catalytic triad of serine, histidine, and aspartic acid two aspartic acids in active site tetrahedral intermediate covalent intermediate direct nucleophilic attack by water Answer Bank trigonal planar intermediate four aspartic acids in active site direct electrophilic attack by water catalytic triad of serine, leucine, and valine
Consider the serine protease, chymotrypsin. Draw the energy diagram of the reaction catalyzed by chymotrypsin and...
Consider the serine protease, chymotrypsin. Draw the energy diagram of the reaction catalyzed by chymotrypsin and label all relevant points (intermediates, transition states, reactants, products) a. Draw a dipeptide as a general substrate for chymotrypsin, and draw out the mechanism (use arrows!) describing the proteolytic reaction from the beginning until the covalent intermediate (not the tetrahedral intermediate). b.
Compare and contrast serine proteases and aspartic proteases. Not all answers will be used. Question 3...
Compare and contrast serine proteases and aspartic proteases.
Not all answers will be used.
Question 3 of 5 Map Serine protease Both Aspartic protease direct electrophilic covalent tetrahedral trigonal planar catalytic triad of serine, four aspartic acids catalytic triad of serine, direct nucleophilic two aspartic acids intermediate attack by water intermediate intermediate leucine, and valine attack by waterin active site in active site histidine, and aspartic acid O Previous ⓧ Give Up & View Solution O Check Answer 0 Next...
Trypsin, chymotrypsin, and elastase are all serine proteases that cleave after different amino acids. What is responsible for the substrate specificity? Choose one: A. Different amino acids involved in the catalytic triad OB. Each protease is made in a different cell type. C. The substrate binding pockets accommodate different amino acids. D. Different catalytic mechanisms
The structure of the active site of chymotrypsin is shown below. The catalytic triad shown (Ser 195, His 57, and aspl02) are shown. A peptide with a phenylalanine is shown bound in the active site. 1. Chymotrypsin is a serine protease. The Km for chymotrypsin with N-acetylvaline ethyl ester is 8.8 X 102 M. The Km for the reaction with N-acetyltyrosine ethyl ester is 6.6 X 10 (a) Which substrate has the higher affinity for this enzyme? (b) Give a...
33, 48
Depicted below are a peptide substrate and the three catalytic residues within the chymotrypsin active site Note that the 2-dimensional geometry is only roughly shown. R1 represents a large hydrophobic amino acid and R represents other amino acids. The R groups of the catalytic triad of aspartate (Asp102), serine (Ser195), and histidine (His57) are shown. Select the atoms that act as nucleophiles and electrophiles in the acylation phase of the reaction Scroll down for more of this question...
Which of the following amino acid residues are often involved in proton transfers in enzyme-catalyzed reactions? Select one: Histidine, aspartate, lysine, and serine Histidine, aspartate, glutamate, arginine, and lysine. Glutamine, asparagine, lysine, and tyrosine Histidine, aspartate, serine, and cysteine Serine, tyrosine, arginine, and cysteine
Anyone can help me with it?
Compare and contrast serine proteases and aspartic proteases. Not all answers will be used. Serine protease Both Aspartic protease catalytic triad of serine, histidine, and aspartic acid two aspartic acids in active site tetrahedral intermediate covalent intermediate direct nucleophilic attack by water Answer Bank trigonal planar intermediate four aspartic acids in active site direct electrophilic attack by water catalytic triad of serine, leucine, and valine
Consider the serine protease, chymotrypsin. Draw the energy diagram of the reaction catalyzed by chymotrypsin and label all relevant points (intermediates, transition states, reactants, products) a. Draw a dipeptide as a general substrate for chymotrypsin, and draw out the mechanism (use arrows!) describing the proteolytic reaction from the beginning until the covalent intermediate (not the tetrahedral intermediate). b.
Compare and contrast serine proteases and aspartic proteases.
Not all answers will be used.
Question 3 of 5 Map Serine protease Both Aspartic protease direct electrophilic covalent tetrahedral trigonal planar catalytic triad of serine, four aspartic acids catalytic triad of serine, direct nucleophilic two aspartic acids intermediate attack by water intermediate intermediate leucine, and valine attack by waterin active site in active site histidine, and aspartic acid O Previous ⓧ Give Up & View Solution O Check Answer 0 Next...
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