Which one of the following statements on protein conformation is NOT true? (1) Dihedral angles of side-chains in amino acids are depicted in the Ramachandran plot. (2) Infrared spectroscopy can […]
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CSIR PYQ Biochemistry-Conformation of Proteins
Secondary Structure Regions in the Ramachandran Plot
9. The regions of phi, psi space occupied by well characterized protein secondary structures are marked on a Ramachandran plot as shown above. Which of the following statements is CORRECT? […]
CSIR PYQ Biochemistry-Conformation of Proteins
Restrictions in the Ramachandran Plot
The Ramachandran plot graphically shows which combination of torsional angles phi (φ) and psi (Ψ) of amino acid residues contained in a peptide are possible. Examination of the plot below […]
CSIR PYQ Biochemistry-Conformation of Proteins
Understanding Peptides in the Ramachandran Plot
Choose the correct statement about peptides in Ramchandran plot. (1) Peptides that are unstructured will have all the backbone dihedral angles in the disallowed regions. (2) It is not possible […]
CSIR PYQ Biochemistry-Conformation of Proteins
Effect of Pyrrolidine Ring Reduction in Proline on ϕ and Ψ Angles
If the pyrollidine ring of proline is reduced to a linear to a linear form, the new amino acid will have (1) constrained ϕ than proline (2) constrained Ψ than […]
CSIR PYQ Biochemistry-Conformation of Proteins
Ramachandran Plot Quadrant for β-Strands of D-Amino Acids
The ϕ and Ψ values of a ß-strand composed of all D- amino acids will mainly occupy which quadrant in the Ramachandran plot? (1) upper left (2) upper right (3) […]
CSIR PYQ Biochemistry-Conformation of Proteins
Which Amino Acid Has Least Allowed Region in Ramachandran Map
The area of allowed regions in the Ramachandran map will be least for (1) Gly (2) L—Ala (3) L-Pro (4) α-methyl L-Valine Which Amino Acid Has the Least Allowed Region […]
CSIR NET Previous Year Questions on Blotting
Techniques for Diagnosing Influenza Virus Infections
Techniques for Diagnosing Influenza Virus Infections Diagnosis of influenza virus infections can be done using some of the following techniques: A. Western blot and Southern blot B. Northern blot and […]
CSIR NET Previous Year Questions on Blotting
Techniques for Analyzing Gene Expression Pattern
Techniques for Analyzing Gene Expression Pattern Which one of the following techniques/approaches CANNOT be used to analyse expression pattern of a gene? (1) Western blotting (2) qRT-PCR (3) Northern […]
CSIR NET Previous Year Questions on Blotting
AFLP technique for DNA polymorphism detection
Molecular Marker Types Using Both Restriction Enzyme and PCR Techniques Which one of the following molecular marker types uses combination of both restriction enzyme and PCR techniques? (1) SSR (2) […]
