intrinsically disordered proteins: a. help stabilize quaternary structures b. can misfold and lead to aggregations c....
intrinsically disordered proteins:
a. help stabilize quaternary structures
b. can misfold and lead to aggregations
c. are typically made from hydrophilic residues to help interactions with water
d. all of above
Homework Answers
Answer b) can missfold and lead to aggregations
Generally it can result in misfolding and aggregation which are known to be associated with the pathogenesis of numerous diseases.
Changes in the environment and mutation of IDPs can be expected to affect their normal function and leading to misidentification and missignaling.
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intrinsically disordered proteins:
a. help stabilize quaternary structures
b. can misfold and lead to aggregations
c....
Which of the following is true about quaternary structures of proteins? a. It is the three-dimensional...
Which of the following is true about quaternary structures of proteins? a. It is the three-dimensional shape of a protein consisting of a single peptide chain. b. It is the three-dimensional shape of a protein consisting of a multiple peptide chains. c. It is the order of amino acids in the peptide chain. d. It is the number of alpha helices in the peptide chain.
Which of the following statements is true about X-ray diffraction? a) X-ray diffraction can be used...
Which of the following statements is true about X-ray diffraction? a) X-ray diffraction can be used for capturing protein dynamics b) the structure obtained from X-ray diffraction can contain crystal-packing artifacts c) X-ray diffraction can be used to obtain structures of intrinsically disordered proteins d) The x-ray beam is scattered primarily by the nuclei of atoms
2) At a pH greater than that of its isoelectric point, the structure of glycine is...
2) At a pH greater than that of its isoelectric point, the structure of glycine is a) H-CH-COOH b) H-CH-C00- c) H-CH-CO e) H-CH-COO COOH b) H-CH-C00- c) H-CH-COOH d) H-CH-COO NH2 NH2 NH2 NH3 NH 3) Which of the following structures can be destroyed by the dena structures can be destroyed by the denaturation of a protein? a) Only primary and tertiary structures of a protein. b) Only secondary, tertiary y secondary, tertiary, and quaternary structures of a protein....
Which of the following is true about proteins? a. Peptides linkages are made between the side...
Which of the following is true about proteins? a. Peptides linkages are made between the side chain and the carboxyl group. b. Hydrogen bonding between the NH and CEO of the backbone results in only alpha helices! c. Electrostatic interactions between the NH and C=O of the backbone results in only beta sheets. d. Quaternary structures of proteins involve multiple peptide chains interacting together.
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys,...
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys, or His residues? A) Collagen B) Alpha keratin C) Hemoglobin D) Myoglobin E) Beta barrels 6. Which of the following correlates to the classic experiment demonstrating that reduced and denatured RNase A could refold into the native form? A) Disulfide bonds do not stabilize folded proteins B) Reducing agents denature proteins C) 1° structure can determine 3° structure D) Urea cleaves disulfide bonds E)...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and...
1) Select all that apply. Globular proteins: a)are found in hair and wool. b)include myoglobin and collagen. c)are usually water soluble. d)aggregate in aqueous media. e)are often made of β-pleated sheet and α-helix sections wrapped into compact structures. 2) Select all that apply. The Bohr effect: a)depends on the atomic orbital structure of hydrogen. b)can be summarized as a reduction in the oxygen affinity of hemoglobin with decreasing pH. c)is explained by the protonation of key amino acids, including the...
Proteins are polymers of amino acids that can exist in ordered structures stabilized by a variety...
Proteins are polymers of amino acids that can exist in ordered structures stabilized by a variety of molecular interactions. However, when certain conditions are changed, the compact structure of a polypeptide chain may collapse into a random coil. This structural change may be regarded as a phase transition occurring at a characteristic transition temperature, the melting temperature, Tm, which increases with the strength and number of intermolecular interactions in the chain. A thermodynamic treatment allows predictions to be made of...
Q4: Tau proteins are abundant in neurons, and help to stabilize cellular microtubules. When denatured and...
Q4: Tau proteins are abundant in neurons, and help to stabilize cellular microtubules. When denatured and unfolded, they can assemble to form plaques that are thought to be important in the pathology of Alzheimer's disease. For this system: (a) Calculate AG& if we assume that, at equilibrium, 10% of Tau proteins are found in the unfolded state. (b) Calculate the enthalpy of unfolding given that AS d = 98 v (c) If we add a drug that binds to the...
The protein structure labeled A is , whereas, the structure labeled B is Proteins O a)...
The protein structure labeled A is , whereas, the structure labeled B is Proteins O a) All of the above Ob) Amphipathic, polar C) Hydrophilic, hydrophobic d) Hydrophobic, hydrophilic
please help Tor F. A) High molecular weight proteins will migrate farther during gel electrophoresis (SDS-PAGE)....
please help
Tor F. A) High molecular weight proteins will migrate farther during gel electrophoresis (SDS-PAGE). d) B-sheet protein structures can be stabilized by hydrogen bonding between distant residues on the same polypeptide. e) B-sheets are a type of secondary structure and are found in every protein.
Which of the following is true about quaternary structures of proteins? a. It is the three-dimensional shape of a protein consisting of a single peptide chain. b. It is the three-dimensional shape of a protein consisting of a multiple peptide chains. c. It is the order of amino acids in the peptide chain. d. It is the number of alpha helices in the peptide chain.
2) At a pH greater than that of its isoelectric point, the structure of glycine is a) H-CH-COOH b) H-CH-C00- c) H-CH-CO e) H-CH-COO COOH b) H-CH-C00- c) H-CH-COOH d) H-CH-COO NH2 NH2 NH2 NH3 NH 3) Which of the following structures can be destroyed by the dena structures can be destroyed by the denaturation of a protein? a) Only primary and tertiary structures of a protein. b) Only secondary, tertiary y secondary, tertiary, and quaternary structures of a protein....
Which of the following is true about proteins? a. Peptides linkages are made between the side chain and the carboxyl group. b. Hydrogen bonding between the NH and CEO of the backbone results in only alpha helices! c. Electrostatic interactions between the NH and C=O of the backbone results in only beta sheets. d. Quaternary structures of proteins involve multiple peptide chains interacting together.
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys, or His residues? A) Collagen B) Alpha keratin C) Hemoglobin D) Myoglobin E) Beta barrels 6. Which of the following correlates to the classic experiment demonstrating that reduced and denatured RNase A could refold into the native form? A) Disulfide bonds do not stabilize folded proteins B) Reducing agents denature proteins C) 1° structure can determine 3° structure D) Urea cleaves disulfide bonds E)...
Proteins are polymers of amino acids that can exist in ordered structures stabilized by a variety of molecular interactions. However, when certain conditions are changed, the compact structure of a polypeptide chain may collapse into a random coil. This structural change may be regarded as a phase transition occurring at a characteristic transition temperature, the melting temperature, Tm, which increases with the strength and number of intermolecular interactions in the chain. A thermodynamic treatment allows predictions to be made of...
Q4: Tau proteins are abundant in neurons, and help to stabilize cellular microtubules. When denatured and unfolded, they can assemble to form plaques that are thought to be important in the pathology of Alzheimer's disease. For this system: (a) Calculate AG& if we assume that, at equilibrium, 10% of Tau proteins are found in the unfolded state. (b) Calculate the enthalpy of unfolding given that AS d = 98 v (c) If we add a drug that binds to the...
The protein structure labeled A is , whereas, the structure labeled B is Proteins O a) All of the above Ob) Amphipathic, polar C) Hydrophilic, hydrophobic d) Hydrophobic, hydrophilic
please help
Tor F. A) High molecular weight proteins will migrate farther during gel electrophoresis (SDS-PAGE). d) B-sheet protein structures can be stabilized by hydrogen bonding between distant residues on the same polypeptide. e) B-sheets are a type of secondary structure and are found in every protein.
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