The α-amanitin binding site is beneath a “bridge helix” extending across the cleft between the two largest pol II subunits which are

TLS Online TPP Program

#Question id: 12807

#Unit 10. Ecological Principles

If Earth's axis of rotation suddenly became perpendicular to the plane of its orbit, the most predictable effect would be

TLS Online TPP Program

#Question id: 33233

#Unit 1. Molecules and their Interaction Relevant to Biology

The pH dependence of the rate of the RNase A reaction suggests the involvement of 

a. Two ionizable residues with pK values of 5.4 and 6.4

b. Single ionizable residue with pK values 7

c. Cytosine residue in active site

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#Question id: 32422

#Unit 2. Cellular Organization

Rho proteins exist in the Rho-GDP bound form complexed with a protein known as: 

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#Question id: 415

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following compounds does not have a large negative free energy of hydrolysis?

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#Question id: 455

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct for a step in a reaction pathway to serve as a control point

A) irreversible  B) endergonic  C) far from equilibrium