Proper folding is essential for most proteins to function. Which of the following statement about protein folding are correct. There may be more than 1 right answer. a) changing the primary sequence will change the final conformation b) desaturation results in a protein that has a higher free energy than the native conformation c) protein spontaneously fold into their correct shape d) denatrutation will cause a protein to lose its tertiary structure

Proper folding is essential for most proteins to function. Which of the following statement about protein folding are correct. There may be more than 1 right answer. a) changing the primary sequence will change the final conformation b) desaturation results in a protein that has a higher free energy than the native conformation c) protein spontaneously fold into their correct shape d) denatrutation will cause a protein to lose its tertiary structure

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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Describe as completely as possible, the four levels of protein What type of bonds hold a protein together at the primary level? What type of bonds maintain the protein at the secondary and tertiary level? Give an example of secondary, tertiary, and quarternary level proteins. At which level is the protein functional? What happens (at a molecular level) when a protein is denatured?
The tertiary structure of a protein is the : A) overall protein structure resulting from the aggregation of two or more polypeptide subunits. B) order in which amino acids are joined in a polypeptide chain. C) bonding together of several polypeptide chains by weak bonds. D)organization of a polypeptide chain into an α helix or β pleated sheet. E)unique three-dimensional shape of the fully folded polypeptide.
Protein folding is critical for function because the properties of a protein arise from its overall shape and the distribution within that shape of the various amino acid side-chains. Which of the following statements about protein three-dimensional structure are correct? 1) the folding pattern of a protein is ultimately determined by its amino acid sequence. 2) proteins tend to fold in such a way that the hydrophobic amino acids are buried in the interior, while hydrophilic amino acids are exposed at the surface. 3) the chemical interactions within a protein molecule that support its overall folded structure are mostly covalent C-C (carbon to carbon) bonds between amino acid side-chains. 4) the overall folding pattern/shape of a protein molecule is termed its primary structure. 5) during evolution, the three-dimensional structure of a protein is often more strongly conserved than its amino acid sequence. More than one answer might be right
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.
What level of protein structure is determined by the following:(a) Peptide bonds between amino acids?(b) Hydrogen bonds between backbone carbonyl oxygen atoms and hydrogen atoms attached to backbone nitrogen atoms?(c) R group interactions that may involve Van der Waalsforces, ionic interactions, or hydrogen bonds?
A portion of a polypeptide chain contains the following sequence of amino acids: (-Met, -Leu, -Ala, -Cys, -Asp-) a.) Which amino acid can form a disulfide bond? b.) Which amino acids are likely to make the polypeptide more soluble in water? c.) Which amino acids are likely to make the polypeptide less soluble in water? d.) How does the primary structure of a protein affect its tertiary structure?
which of the following is correct about the structure of proteins? a- the number of peptide bonds is equivalent to the number of amino acid residues b- the secondary structure of proteins are mostly stabilized by hydrophobic interactions c- protiens mostly composed of polar amino acids will have an elongated (fibrous) tertiary structure d- the quaternary structure of a protein is formed between or among similar polypeptides only
A protein in its native three dimensional conformation is cleaved with trypsin. According to the amino acid sequence, there are 9 residues where trypsin could cleave, yet only 3 fragments were produced from the digest. What conclusion can be made about protein structure that would lead to this result? The protein has multiple domains b. The protein is highly compacted, minimally accessible by solvent molecules c. The protein has quaternary structure d. The protein has a dynamic structure, highly accessible by solvent molecules e. The protein is compromised only of alpha helices
The tertiary structure of a protein is established by: a. The sequence of amino acids in the protein b. The molecular weight of the protein c. The total number of amino acids in the protein d. The number of disulfide bridges in the protein e. The net charge of the the protein at physioloical pH.
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 are correct about protein structure (select all that apply)? A. Post-translational modifications such as glycosylation or phosphorylation may alter the structure of a protein B. Only amino acids with a net charge may interact with other amino acids C. The 3D structure of a protein is determined primarily by the protein backbone/main chain conformation while the amino acid sidechains play only a minor role. D. Hydrophobic interactions play a key role in protein folding E. Amino acid sidechains contribute to 3D structure through their ability to form hydrogen bonds with other amino acids
What is the concepts of the native conformation of proteins? Why and how do proteins refold and unfold?