#Question id: 741
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of following statements are INCORRECT about secondary structure of proteins
A. Long block of Glu residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation below its pKR value
B. Long block of Lys residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation above its pKR value
C. Long block of Ala residues segment of the chain will not form an alpha helix at pH 7.0 but it ll take helical confirmation below its pKR value
D. Histidine side chain remain uncharged over pH range 3-6
#Question id: 742
#Unit 1. Molecules and their Interaction Relevant to Biology
Match the following
|
Conformation |
Phi |
Psi |
Omega |
|
A. Alpha helix |
I. -57 |
P. -47 |
X. 180 |
|
B. B sheet |
II. -135 |
Q. +135 |
Y. 0 |
|
C. Polyproline I |
III. -83 |
R. +158 |
|
|
D. Polyproline II |
IV. -78 |
S. +149 |
#Question id: 743
#Unit 1. Molecules and their Interaction Relevant to Biology
Glycophorin, an integral membrane protein, has a single transmembrane alpha helix. Which of the following idealized hydropathy plots most likely represents the transmembrane nature of glycophorin?
#Question id: 27081
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 27082
#Unit 1. Molecules and their Interaction Relevant to Biology
Choose the incorrect statement regarding β -turns
#Question id: 27083
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following is correctly describing the differences between β Turn type I & β Turn type II
(1) type I & II i + 1 values differ only in psi values
(2) type I & II i + 1 values differ only in phi values
(3) type I & II i + 2 values differ only in phi values