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TLS Online TPP Program

#Question id: 150

How do the pKa values of an ionizable side chain compare when the amino acid is free versus when it is in a polypeptide chain?

#Section 2: General Biology

  1. The pKa of the side chain is independent of whether the amino acid is in a polypeptide chain or is free.

  2. The pKa of the side chain is always lower for the free amino acid.

  3. The pKa of the side chain may be lower or higher in a polypeptide chain due to weaker inductive effects and differences in their microenvironments.

  4. The pKa of the side chain is usually higher in a polypeptide chain due to stabilization from nearby residues in the three-dimensional structure.

More Questions
TLS Online TPP Program

#Question id: 159

#Section 2: General Biology

The chirality of an amino acid results from the fact that its alpha carbon:
TLS Online TPP Program

#Question id: 14122

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the statement is incorrect about SCOP?
TLS Online TPP Program

#Question id: 607

#Section 2: General Biology

In E. coli ________ is an activator and ________ is a negative allosteric modulator of the enzyme phosphofructokinase-1. 
TLS Online TPP Program

#Question id: 18084

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

PSORT is a computational tool which is used for
TLS Online TPP Program

#Question id: 1405

#Section 3: Genetics, Cellular and Molecular Biology

A gain-of-function mutation in which of the following would have the same effect as a gain-of-function mutation in Ras?