Which of the following statements is consistent with the structural
Which of the following statements is consistent with the structural motifs in 1OPF?
This protein has tertiary structure, where each subunit is a large antiparallel beta barrel.
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 quaternary structure, where each subunit is a large parallel beta barrel.
Which of the following statements is consistent with the composition of the strands of the beta barrels in 1OPF?
The strands are composed of all polar amino acids.
The strands show no ordered arrangement of the amino acids.
The strands are composed of all nonpolar amino acids.
The strands are composed of alternating nonpolar and polar amino acids.
Given the information in the PDB entry for 1OPF, which of the following statements best predicts the properties of the beta barrels of 1OPF (See Bioinformatics Exercise 4.5)?
The antiparallel beta barrels should have a polar interior and a nonpolar exterior.
The antiparallel beta barrels should have a nonpolar interior and a polar exterior.
The antiparallel beta barrels should have a nonpolar interior and exterior.
The antiparallel beta barrels should have a polar interior and exterior.
How does the surface rendering of 1OPF using the hydrophobicity color scale support the predictions from Question 3?
The surface rendering confirms that the exterior of the protein is hydrophobic and the interiors of the barrels are hollow and hydrophilic.
The surface rendering confirms that the exterior of the protein is hydrophilic and the interiors of the barrels are hollow and nonpolar.
The surface rendering confirms that the exterior of the protein is hydrophilic and the interiors of the barrels are hollow and hydrophobic.
The surface rendering confirms that the exterior of the protein is hydrophobic and the interiors of the barrels are hollow and nonpolar.
Which of the following statements is consistent with how a lipid bilayer may interact with the OmpF porin (1OPF)?
The phospholipid groups from only one side of the bilayer interact with the polar regions of OmpF, while the hydrophobic core of the bilayer noncovalently interacts with the middle regions of the protein exterior through van der Waals interactions.
The phospholipid groups from both leaflets of the bilayer interact with the top and bottom polar regions of OmpF, while the hydrophobic core of the bilayer noncovalently interacts with the middle regions of the protein exterior through van der Waals interactions.
The phospholipid groups from only one side of the bilayer interact with the polar regions of OmpF, and the remaining components of the protein are exposed to the cytosol.
The phospholipid groups from both leaflets of the bilayer interact with the top and bottom polar regions of OmpF, while the hydrophobic core of the bilayer noncovalently interacts with the middle regions of the protein exterior mainly through hydrogen bonds.lipopolysaccharide
Which of the following statements is consistent with the structure shown in 2BRD?
This protein has tertiary structure, where each subunit is composed of alpha-alpha units.
The protein has quaternary structure with three identical subunits, where each subunit is composed of beta hairpins.
The protein has quaternary structure with three identical subunits, where each subunit is composed of alpha-alpha units.
The protein has tertiary structure, where each subunit is composed of beta hairpins.
Which of the following statements is consistent with the composition of the alpha helices in 2BRD?
The alpha helices are composed of alternating nonpolar and polar amino acids.
The alpha helices are composed mostly of nonpolar amino acids.
The alpha helices are composed mostly of polar amino acids.
The alpha helices show no ordered arrangement of the amino acids.
In 2BRD, what type of noncovalent interaction is likely occurring between Ile 191 and the closest lipid molecule?
dipole-dipole interaction
ion pair
London dispersion forces (induced dipole-induced dipole interactions)
hydrogen bond
Which of the following statements best describes the hydrophobic character of bacteriorhodopsin (2BRD)?
Both the interior and exterior of the protein are hydrophilic, including the central core of the trimer.
Both the interior and exterior of the protein are hydrophilic, but the central core of the trimer is hydrophobic.
Both the interior and exterior of the protein are hydrophobic, but the central core of the trimer is hydrophilic.
Both the interior and exterior of the protein are hydrophobic, including the central core of the trimer.
For any transmembrane protein structure, which of the following properties isNOTrequired?
Exterior amino acids that are hydrophobic.
Interior amino acids that are hydrophobic.
A secondary or supersecondary structure that forms an overall circular structure.
Polar residues at the top and bottom edges of the protein.
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Rating:
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Solution: Which of the following statements is consistent with the structural