Vasopressin has two actions, one on the kidney and the other on vascular smooth muscle, Contraction of vascular smooth muscle are mediated by different receptors, different intracellular mechanisms, and different second messengers,

a. The receptor for ADH on vascular smooth muscle is a V1 receptor

b. The receptor for ADH on the vascular smooth muscle is a V2 receptor

c. The second messenger for this action is IP3/Ca2+ 

d. The second messenger is cAMP.

Which of the above is/are correct? 

TLS Online TPP Program

#Question id: 33391

#Unit 1. Structure and Function of Biomolecules

α-Turn 

a. Consists of 5 amino acids, generally termed as i, 1+1, i+2, i+3 and i+4. 

b. H-bond is seen between i and i+4 (First and Fifth residue).

c. The conformation of i+1, i+2 and i+3 are crucial

TLS Online TPP Program

#Question id: 33392

#Unit 1. Structure and Function of Biomolecules

For γ-Turns, which is of the following statement is correct

a. Consists of 5 amino acids

b. H-bond is seen between i and i+3

c. The conformation of i+1 is crucial 

d. dihedral angles of residue i+1 are (70, -60)

which is of the following statements are correct

TLS Online TPP Program

#Question id: 33393

#Unit 1. Structure and Function of Biomolecules

In case of Beta Hairpin

TLS Online TPP Program

#Question id: 33394

#Unit 1. Structure and Function of Biomolecules

For Helix-turn-Helix, which of the following is correct

TLS Online TPP Program

#Question id: 33395

#Unit 1. Structure and Function of Biomolecules

Which of the following is correct for Zinc Finger Motif 

a. Zinc atom stabilizes the structure / fold by coordination bonds. 

b. Each motif contains about 30-50 amino acids.

c. Contains regular patterns of Cys / His, which coordinate with Zinc atom.

TLS Online TPP Program

#Question id: 33396

#Unit 1. Structure and Function of Biomolecules

In case of Coiled-coils 

a. Alpha-helices are packed together through the charged interactions only

b. They have heptad repeated sequences.

c. 3.6 aa / turn and 5.2A for a helix. 

d. abcdefg 'a' &'d’ are hydrophobic residues 'e' and 'g' are found to be charged amino.

Which of the following is correct