Which of the following is/are descriptive of all globular proteins? 1. They are significantly hydrophilic in nature. II. They serve as primary scaffolding of cells. III. They are conflation of various types of local folding of polypeptide. Select the correct response: Il only land I Ionly Il and III land IlI I, ll and III Ill only

Which of the following is/are descriptive of all globular proteins? 1. They are significantly hydrophilic in nature. II. They serve as primary scaffolding of cells. III. They are conflation of various types of local folding of polypeptide. Select the correct response: Il only land I Ionly Il and III land IlI I, ll and III Ill only

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter3: The Chemistry Of Life: Organic Compounds

Section: Chapter Questions

Problem 9TYU: Which of the following levels of protein structure may be affected by hydrogen bonding? (a) primary...

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Which of the following is/are descriptive of all globular proteins? I. They are significantly hydrophilic in nature. II. They serve as primary scaffolding of cells. III. They are conflation of various types of local folding of polypeptide. Select the correct response: Ill only Il and Ill l and II 1. Il and III I and IlI I only Il only
Define the following terms: a. intrinsically disordered protein b. intrinsically disordered region c. prosthetic group d. apoprotein e. molecular chaperone
What is the concepts of the native conformation of proteins? Why and how do proteins refold and unfold?
Which of the following is an example of protein denaturation? * A. Amino acids fold into repeating patterns due to hydrogen bonding of the peptide backbone. B. Several amino acids are joined together together via peptide bonds. C. A protein binds with with a substrate, lowering the activation energy of reaction. D. A protein is exposed to extremely high heat, causing it to lose its secondary structure and be left with only its primary structure. E. Results to unfolding, partial or incomplete disorganization of the protein's secondary and tertiary structure.
Although all of these may play a part, the major driving force in protein folding is: a) hydrogen bond formation b) salt bridge formation c) steric interactions d) the hydrophobic effect A partially folded protein is called a a) peptide template b) active domain c) molten globule d) precursor protein Which of these processed is NOT seen in protein denaturation? A) subunits are dissociated b) folding is unraveled c) alpha helix and beta sheets are unraveled d) peptide bonds are broken. A protein which has more than one stable conformation is called a: a) chaperone protein b) molten globule c) flexible protein d) inherently unstructured protein If a denatured protein does not spontaneously renature upon removal of denaturing agents, it may require a ____ to renature. a) chaperone protein b) molten globule c) flexible protein d) inherently unstructured protein Prion protein and amyloid protein have which trait in common? A) They denature very easily…
Which of the following statements are correct about the molten globular state of protein folding (select all that appy)? A. May be short-lived or long-lived intermediate in protein folding B. Contains substantial levels of secondary structure C. Has loose packing of hydrophobic core D. Larger radius of gyration than dentaured state E. Is a more compact state than the native confomation
The tertiary structure of a protein is the 3-dimensional folding of the polypeptide chain. What types of bonds support the folding of proteins into this level of protein structure? Also, how do these bonds/interactions impact how a protein folds and its surface properties? Can the tertiary structure of a protein depend on the type of cell system used for synthesis? Explain.
Protein A will fold into its native state only when protein B is also present in the solution. However, protein B can fold itself into native confirmation without the presence of protein A. Which of the following is true? a. Protein B serves as precursor for protein A b. Protein B serves as molecular chaperone for protein A c. Protein B serves as ligand for protein A d. Protein B serves as structural motif for protein A
Which of the following protein should coat a vesicle that contains a receptor that can recognize the proteins having the following amino acid sequence Lysine (K), Aspartic Acid (D), Glutamic acid (E), Leucine (L)? Group of answer choices COP I COP II All of the other/above
Which of the following statements is/are TRUE for globular proteins? A. sensitive to changes in pH & heat B. regular amino acid sequence C. soluble in water D. structural role
Which of the following statements is incorrect? A.- the structure and charge of the proteins have direct effects on the rate of its migration through the gel matrix include b.- SDS is a type of a buffer with strong protein-denaturing effect and binds to the protein backbone at a constant molar ratio c.- SDS and polyacrylamide gel largely eliminates the influence of the structure and charge, and proteins are separated solely based on polypeptide chain length. d.When proteins are separated by electrophoresis through a gel matrix, smaller proteins appears at the lower portion of the gel
Consider protein folding that results when the following components interact: Where the solution is at a pH of 7, green (thick-dotted line) represents aspartic acid (R group contains a carboxylic acid with pKa = 4), orange (thick-solid line) represents lysine (R group contains an amine with pKa = 10), and blue (thin-solid line) represents hydrophilic groups. Rank the three complexes in order from lowest to highest dissociation constants Kd (low Kd values correspond to good binding constants and low energy, while high Kd values correspond to low binding constants and high energy) as determined by intermolecular charge-charge interactions. For those complexes with charge-charge interactions being equal, look at the possibility for the formation of hydrogen bonds via carboxylic acid dimers (only possible when the carboxylic acid is protonated) which are low energy structures.