38. In a coarse grained model of protein folding: a.every atom is represented an
ID: 705486 • Letter: 3
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38. In a coarse grained model of protein folding: a.every atom is represented and incorporated into the folding algorithm b.there is an attempt to minimize contact between each "grain" (ie: grouping of residues) c.the folding energy calculation is much simpler and easier to compute due to large groupings similar amino acids d. none of the above 39. Which of the following statements is false when calculating the energetics of protein folding: a.fewer points of contact in a polypeptide will equate to a shorter folding duration b.more points of contact in a peptide sequence will equate to a shorter folding duration c. energy tends to be conserved as a protein folds d. entropy increases as a protein folds 40. Which of the following statements concerning beta barrels is false? a. beta barrels are often defined by the number of beta strands and the shear they possess b. alternating residues of a particular strand can contribute hydrogen bonds, known as hydrogen bond girdling c. the larger the shear number of a beta barrel the more vertical each beta strand will be d.triosephosphate isomerase, GFP, retinol-binding protein and N-glycosidase F (PN examples of beta barrels Gase F) 41. Visual pigments(ie: opsins) in the retina serve to trap photons of light within a "cage transmembrane spanning alpha helices. A-True B FalseExplanation / Answer
38) In coarse grained model of protein folding, molecules are represented by individual atoms, or similar atoms are grouped and this group is represented as a single atom.
This decreases the simulation time as the degree of freedom decreases.
Therefore C is the correct option.
39) If the number of atoms is large, number and types of interactions are large too which leads to a greater time for protein folding. For the same reason, coarse grained model of folding(where we group similar atoms and represent them by a single atom) takes lesser time than all-atoms molecular dynamics simulation of protein folding.
Therefore B is the correct option.
40) Greater the shear value, greater the slope with respect to the beta barrel lumen, i.e, larger the shear number of a beta barrel, the more slanted each beta strand will be.
Therefore C is the correct option.
41) Visual pigments in the retina are called Rhodopsin. They are light-sensitive receptor proteins that trap photons of light within a cage of transmembrane spanning alpha helices.
Therefore A is the correct option.
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