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: 17081

#Unit 12. Applied Biology

What type of drug is Aminopterin and what it is used for

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#Question id: 17082

#Unit 12. Applied Biology

What is an Aminopterin

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#Question id: 17083

#Unit 12. Applied Biology

Fusion of two cells produces a single cell with two nuclei one from each of the cells entering fusion; such a cell is called as 

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#Question id: 17084

#Unit 12. Applied Biology

What color does phenol red turn in acid?

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#Question id: 19213

#Unit 12. Applied Biology

In Agrobacterium tumefaciens Crown gall formation is the consequence of

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#Question id: 19214

#Unit 12. Applied Biology

Depending on the Ti plasmid, the length of the T-DNA region can vary from approximately