two distinct polypeptide sequences b and c fold into unique three dimensional structures polypep

Name: two distinct polypeptide sequences b and c fold into unique three dimensional structures polypeptide b has the potential to act as a binding protein and polypeptide c as a catalyst they only 16735
Uploaded: 2023-05-31T18:36:12-08:00
Duration: 3 min 39 s
Channel: Madhur L
Description: two distinct polypeptide sequences b and c fold into unique three dimensional structures polypeptide b has the potential to act as a binding protein and polypeptide c as a catalyst they only 16735

Step 1: Identify the components involved in the structural organization. We have two distinct po

Two distinct polypeptide sequences b and c fold into unique...

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Two polypeptides, A and B, have very similar tertiary structures, but A normally exists as a monomer and B normally exists as a dimer. What differences would you expect in the composition and distribution of amino acids in A versus B?

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The quaternary structure of a protein is directly associated with: a. the interaction of two or more separate peptide chains b. the linear sequence of the amino acids c. regular repeating shapes, such as beta sheets d. the three-dimensional shape of a single protein

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68-which-of-the-following-statements-most-likely-to-be-true-of-nonpolar-groups-in-aqueous-solution-they-are-hydrophilic-andfound-buried-within-proteins-they-are-hydrophobic-and-found-on-prot-99144

68. Which of the following statements is MOST likely to be true of nonpolar R groups in aqueous solution? A. They are hydrophilic and found buried within proteins B. They are hydrophobic and found on protein surfaces C. They are hydrophilic and found on protein surfaces D. They are hydrophobic and found within proteins 69. Which of the following BEST describes the essential amino acids? A. Must be supplied in the diet because the organism has lost the capacity to aminate the corresponding ketoacids B. Must be supplied in the diet because the human has an impaired ability to synthesize the carbon chain of the corresponding ketoacids C. Are identical in all species studied D. Are defined as those amino acids which cannot be synthesized by the organism at a rate adequate to meet metabolic requirements 70. Which of the following BEST describes the biological value of a protein? A. The percentage of ingested protein utilized for protein synthesis in the body B. The percentage of ingested protein/nitrogen absorbed into the circulation C. The percentage of ingested protein/nitrogen in the body D. The gain in body weight per gram of protein ingested 51. Which of the following enzyme classes catalyze reactions in which two molecules are covalently connected to each other? A. Kinase B. Lyasae C Isomerase D Ligase 52. What are isoenzymes? A. Chemically, immunologically and electrophoretically different forms of an enzyme B. Different forms of an enzyme that are partially or totally similar in all properties C. Enzyme forms that are catalyzing different reactions but share the same coenzyme D. Forms of enzymes having the same tertiary and quaternary structures 53. What is an apoenzyme? A. The protein portion B. The non-protein group C It is a conjugated enzyme D It is a prosthetic group 54. Which of the following enzyme groups can catalyze oxidation reactions? A. Phosphorylases C. Dehydrogenases B. Isomerases D. Hydrolases 55. Which of the following is produced with the combination of apoenzyme and coenzyme? A. prosthetic group B. cofactor C. holoenzyme D enzyme substrate complex 56. Which of the following is true of enzymes' I - They increase the rate of reaction by stabilizing the transition state II - They raise activation energy to shift the equilibrium to favor the products III - They lower activation energy by altering the products of a reaction A I only B. III only C. I and II D. II and III 21. A transport protein is known to have the following structure a prosthetic group carries reduced iron while one moiety is composed of two alpha subunits and two beta subunits These components come together in order to form the larger functional protein. Based on this information. what is the level of protein structure being described, A Primary structure: the moieties simply refer to the amino acid chain that has a particular sequence. B. Secondary structure: the moieties are highly irregular in their arrangement. C Tertiary structure: I. polypeptide chains are arranged geometrically ordered units D Quaternary structure; the protein is formed by tetramers that are interlocked with one another. 22. What will initially change in an amino acid chain being synthesized in a cell if there was a point mutation? I - amino acid sequence II - amino acid composition II- hairpin loop IV - pseudoknot A. I only B. I, II C. I, II, III D. I, II, III, IV 24 What hierarchical structure of a protein is being shown in the illustration below? A. Primary B. Secondary B. Tertiary D. Quaternary 25. If an amino acid chain twists and turns into a tightly wound structure. choose the correct pairing of the hierarch. level of protein structure and the corresponding effect if additional steric hindrances occur as some side chains come into close proximity with each other. A Tertiary structure: the structure will become more stable B Secondary structure. the structure will become more stable C. Quaternary structure: the structure will become less stable D. Secondary structure: the structure will become less stable

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Transcript

00:01 Hello everyone for this question we have to compare the composition and distribution of amino acid in the given two polypeptides.

00:10 So first of all the polypeptide a which exists as monomer so it contains the amino acid residues which support stability of monomeric structure.

00:54 So therefore it includes the amino acids with hydrophobic residues on its surface or charged or polar residues which aid in correct folding and solubility...

Question

Two distinct polypeptide sequences (B and C) fold into unique three dimensional structures. Polypeptide B has the potential to act as a binding protein and polypeptide C as a catalyst. They only function with in the following combination B2C2. Which describes this structural organization?

Question

Two distinct polypeptide sequences (B and C) fold into unique three dimensional structures. Polypeptide B has the potential to act as a binding protein and polypeptide C as a catalyst. They only function with in the following combination B2C2. Which describes this structural organization?

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