#Question id: 729
#Part-B Specialized Branches in Biotechnology
Which of the following is correct about the collagen triple-helix domain
a. is rich in glycine. b. is rich in proline.
c. is rich in hydroxyproline. d. is an alpha helix.
#Question id: 732
#Part-B Specialized Branches in Biotechnology
Ramachandran plots can help increase the accuracy of models derived from x-ray crystallography data. The plot below was created by measuring phi, and psi for each amino acid residue in a 2.2 A resolution crystal structure. In the plot, which excludes Gly and Pro residues, selected residues (dots) are numbered 1 through 5.
Which of the following statements can be correctly stated for this plot in reference to selected residues?
A. Residues 1 and 3 are in either B sheets
B. residue 2 is in a right-handed a helix, and residue 4 is in a left-handed a helix.
C. If residue 5 were Gly, it might be in an acceptable position in the plot
#Question id: 734
#Part-B Specialized Branches in Biotechnology
Which of the following statements is true for two different tripeptides consisting of either glycine or proline?
#Question id: 736
#Part-B Specialized Branches in Biotechnology
The most important contribution to the stability of a protein’s conformation appears to be the:
#Question id: 738
#Part-B Specialized Branches in Biotechnology
Which of the following is correct for peptide bonds
A) C and N are shorter than typical C-N bonds.
B) C and N are longer than typical C-N bonds.
C) C and O are longer than typical C=O bonds.
D) C and O are shorter than typical C=O bonds.
#Question id: 740
#Part-B Specialized Branches in Biotechnology
The conformation of the backbone of a polypeptide is described completely by the angle(s) of rotation about which bond(s)?