#Question id: 23751
#Unit 1. Molecules and their Interaction Relevant to Biology
#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: 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: 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: 740
#Unit 1. Molecules and their Interaction Relevant to Biology
The conformation of the backbone of a polypeptide is described completely by the angle(s) of rotation about which bond(s)?
#Question id: 739
#Unit 1. Molecules and their Interaction Relevant to Biology
What is true about the rotation about bonds in a protein backbone?