1. True or False: Protein structure databases are much larger than protein sequence databases in terms...
1. True or False: Protein structure databases are much larger than protein sequence databases in terms of number of entries?
- TRUE
- FALSE
2. The hydrogen bond is a weak interaction between two polar atoms. Its strength depends on:
- Distance between atoms only
- The angle between atoms only
- Both the distance and bond angle
3. Which is the force typically included in a physics based potential for protein structure modeling?
- Bond stretching
- Torsion angle bending
- Van der Waals interactions
- Hydrogen bonds
- Electrostatics
Homework Answers
1. True- because data included in protein structure databases often includes three- dimensional coordinates as well as experimental information, sucha as unit cell dimensions and angles for X-ray crystallography determined structures. Though most instances, in this case either proteins or specific structure determinations of a protein, also contain sequence information and some databases even provide means for performing sequence based queries, the primary attribute of structural database whereas sequence databases focus on sequence information, and contain no structural information for majority of entries.
2. Distance between atoms only - the shorter the bond length the stronger the bond.
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1. True or False: Protein structure databases are much larger
than protein sequence databases in terms...
Your study group is trying to identify differences in the four levels of protein structure. The...
Your study group is trying to identify differences in the four levels of protein structure. The secondary structure but not the tertiary structure is stabilized by: a. ionic attractions between oppositely charged side chains. b. H-bonding between polar side chains. c. hydrophobic interactions between nonpolar side chains. d. H-bonding between the oxygen of the backbone carbonyl and the hydrogen of the backbone amine. e. van der Waals forces.
1. Which of the following statements is consistent with the structural motifs in 1OPF? This protein...
1. Which of the following statements is consistent with the
structural motifs in 1OPF?
This protein has tertiary structure, where each subunit is a
large parallel beta barrel.
This protein has quaternary structure, where each subunit is a
large antiparallel beta barrel.
This protein has tertiary structure, where each subunit is a
large antiparallel beta barrel.
This protein has quaternary structure, where each subunit is a
large parallel beta barrel.
3. Given the information in the PDB entry for 1OPF,...
Question 1 The protein in the diagram is (circle all that apply): Group of answer choices...
Question 1
The protein in the diagram is (circle all that apply):
Group of answer choices
a) a peripheral membrane protein
b) an integral membrane protein
c) a lipid anchored protein
Question 2
The protein shown in the diagram could potentially function as
(circle all that apply):
Group of answer choices
a) a receptor
b) a transmembrane anchor
c) a pore or channel
Question 3
The protein shown in the diagram has which of the following
(choose all that apply)?...
all 3 Verw. Mino acid tochnologie e Al e of the document is OVOS BSTOS Which...
all 3
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1. Which of the following amino acids has the most hydrophobic side chain? a). E b)....
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Question 3 1 pts Determine if each of the statements is True or False regarding the best Lewis structure of S2Cl2. The...
Question 3 1 pts Determine if each of the statements is True or False regarding the best Lewis structure of S2Cl2. The four atoms are in a chain, and the two interior atoms are the same. 1) There are three single bonds in the Lewis structure. True 2) The sulfur atoms are central atoms. True 3) Each sulfur atom has one lone pair and two bonding pair electrons. False 4) The chemical bond between two sulfur atoms is a double...
Covalent and non-covalent bonds. Hydrogen bonds: what type of interaction, which atoms are involved. Covalent bonds,...
Covalent and non-covalent bonds. Hydrogen bonds: what type of interaction, which atoms are involved. Covalent bonds, hydrogen bonds, Van der Waals forces, electrostatic interactions. Polarity of water What is the maximum number of hydrogen bonds that one water molecule can have with neighboring water molecules? Hydrophobic and hydrophilic molecules. Colligative properties of water Osmosis: water flow Isotonic, hypertonic and hypotonic cells: describe Amphipathic molecules. What is the molecular structure of water? Water as a universal solvent Define and describe cohesion...
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D....
10. The peptide shown has the amino acid sequence: A. Val-Ser-Ile-Glu-Lys B. Lys-Glu-Ile-Ser-Val C. Thr-Asp-Leu-Gln-Arg D. Val-Asp-Ile-Glu-Arg 11. Which of the following describes the entire three- dimensional structure of a single polypeptide? A. Secondary structure B. Quaternary structure C. Tertiary structure D. Primary structure 12. What is the primary driving force in the formation of protein tertiary structure? A. Energy released when additional ion pairs are formed. B. The exclusion of non-polar substances from aqueous solution. C. The formation of...
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1. Which of the following statements is consistent with the
structural motifs in 1OPF?
This protein has tertiary structure, where each subunit is a
large parallel beta barrel.
This protein has quaternary structure, where each subunit is a
large antiparallel beta barrel.
This protein has tertiary structure, where each subunit is a
large antiparallel beta barrel.
This protein has quaternary structure, where each subunit is a
large parallel beta barrel.
3. Given the information in the PDB entry for 1OPF,...
Question 1
The protein in the diagram is (circle all that apply):
Group of answer choices
a) a peripheral membrane protein
b) an integral membrane protein
c) a lipid anchored protein
Question 2
The protein shown in the diagram could potentially function as
(circle all that apply):
Group of answer choices
a) a receptor
b) a transmembrane anchor
c) a pore or channel
Question 3
The protein shown in the diagram has which of the following
(choose all that apply)?...
all 3
Verw. Mino acid tochnologie e Al e of the document is OVOS BSTOS Which of the following statements about resonance in peptide bonds is TRUE? There is more than one correct option to answer the question. B. c. Approximately 40% double bond (coplanar) character. Restricted rotation in the peptide backbone at the N-C, bond and Co-C, bond. The coplanar six atoms of the peptide bond group of atoms. Peptide bond is always in trans configuration. Co-N bond distance...
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