Ramachandran plots can help increase the accuracy of models derived from x-ray crystallography data. The plot below was created by measuring phi, and psi for each amino acid residue in a 2.2 A resolution crystal structure. In the plot, which excludes Gly and Pro residues, selected residues (dots) are numbered 1 through 5.

Which of the following statements can be correctly stated for this plot in reference to selected residues?

A. Residues 1 and 3 are in either B sheets

B. residue 2 is in a right-handed a helix, and residue 4 is in a left-handed a helix.

C. If residue 5 were Gly, it might be in an acceptable position in the plot

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#Question id: 26969

#Unit 10. Ecological Principles

Effects of intraspecific competition represented in the graph, Choose the correct graph on growth and photosynthesis ?

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#Question id: 4432

#Unit 3. Fundamental Processes

A transcription factor binds to the sequence TAAGCTAAGCCCTTG and inhibits transcription. What functional domains must this protein contain? (Note: no other transcription factor can bind this sequence)

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#Question id: 4039

#Unit 3. Fundamental Processes

Which of the following statements is true about a lac operon with this genotype?

I-d O+ Z+ Y- A- ___

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#Question id: 6579

#General Aptitude

Find the term which does not fit into the series : G4T, J10R, M20P, P43N, S90L

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#Question id: 33402

#Unit 1. Molecules and their Interaction Relevant to Biology

A series of βαβ loops arranged so that the  strands form a barrel creates a particularly stable and common motif called as