Transcription factors can

a. exhibit cooperative binding.  b. exist as heterodimers.

c. act to repress transcription of transcription factor genes.

d. undergo conformational changes which alter activity.

e. never interact with co-repressors.

TLS Online TPP Program

#Question id: 27092

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following ions are essentially involved in EF hand motifs

TLS Online TPP Program

#Question id: 27093

#Unit 1. Molecules and their Interaction Relevant to Biology

Say a, b, c, d, e, f, g  are the amino acid forming αα motif / Coiled-coils then which of the condition must be followed to form perfect αα motif / Coiled-coil

(1) 'a' & 'd' are hydrophobic residues

(2) 'a' & 'd' are hydrophilic residues

(3) 'e' and 'g' are found to be charged amino acids

(4) 'e' and 'g' are found to be uncharged amino acids

TLS Online TPP Program

#Question id: 27094

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is incorrect regarding the βαβ Motif

TLS Online TPP Program

#Question id: 27095

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct regarding the Type I β turn positions  Ramachandran plot

TLS Online TPP Program

#Question id: 27096

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is incorrect regarding the Type II β turns

TLS Online TPP Program

#Question id: 27097

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct regarding the β turns

(1) In Type I β turn i+1 lies in RHH region while i+2 lies near BS region

(2) In Type II β turn i+1 lies in BS while i+2 lies in below LHH

(3) In Type I’ β i+1and i+2 in near LHH which virtually not allowed region for most of amino acid except Gly

(4) In Type II’ β i+2 lies at 00 psi and i+1 in lower right region both i+2 and   i+1  must be Gly