TLS Online TPP Program

#Question id: 733


Which one of the statements on protein conformation, detailed below is INCORRECT?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. All types of B turns exist with both positive and negative dihydral angle values.

  2. PPII or PGII helix are found in proteins but they are not considered as equivalent secondary structure elements.

  3. Dihydral angles of extended peptide chain exist near 0o point in Ramachandran plot.

  4. PPII helices are stabilized by main chain-water hydrogen bonds

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TLS Online TPP Program

#Question id: 28062

#Unit 1. Molecules and their Interaction Relevant to Biology

Thermostable proteins are stable at high temperature due to

a. Vander Waals interaction

b. Ionic bond only

c. High protein’s hydrophobic core 

d. high incidence of salt bridges

Which of the following is correct 

TLS Online TPP Program

#Question id: 28063

#Unit 1. Molecules and their Interaction Relevant to Biology

Characteristics of Thermostable proteins are  
a. loosely packed core as evidenced by a high surface-to-volume ratio.
b. High amounts of Arg
c. High amount of Ala in helices
d. Stable at high temperature due to High protein’s hydrophobic core and high incidence of salt bridges

TLS Online TPP Program

#Question id: 28064

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following Techniques can be used to for Measuring Stability of protein    
a. DSC (calorimetry) 
b. Urea gradient gels 
c. FRET
d. EPR
Which of the following is correct

TLS Online TPP Program

#Question id: 28065

#Unit 1. Molecules and their Interaction Relevant to Biology

Guanidinium ion and urea are  

TLS Online TPP Program

#Question id: 28066

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following parameter is measured during analysis for the Stability of protein by DSC (calorimetry) 

TLS Online TPP Program

#Question id: 28067

#Unit 1. Molecules and their Interaction Relevant to Biology

The graph shown below is for Fluorescence emission spectra any protein X, The which of the following assumption can be made