An experiment of Anfinsen on ribonuclease A (RNase A) showed that proteins can be denatured reversibly by 2-mercaptoethanol and 8 M urea. The protein must therefore renature spontaneously;

a) Remove mercaptoethanol and then removal of the urea

b) Removal of the mercaptoethanol allows the protein to re-form disulfide bonds in the presence of oxygen and then removal of the urea

c) Removal of the denaturant (urea) and reductant (mercaptoethanol) allows the protein to renature and re-form disulfide bonds in the absence of oxygen

d) Adding a small amount of mercaptoethanol to the scrambled protein in the absence of O2 catalyzes its conversion to the active enzyme

Which one of the following steps will leads to regaining of the full activity of ribonuclease A (RNase A)

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#Question id: 28664

#Unit 2. Cellular Organization

DNA-bound G1 cohesins Convert into cohesive complexes by cohesin acetyl transferases (CoATs), that are involve to acetylation, which acetylate__

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#Question id: 28665

#Unit 2. Cellular Organization

In which of the following phase DNA-bound G1 cohesins Convert into cohesive complexes by cohesin acetyl transferases (CoATs) ?

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#Question id: 28666

#Unit 2. Cellular Organization

 Which of the following cohesin-associated factor involves to stabilization of cohesins in vertebrates?

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#Question id: 28667

#Unit 2. Cellular Organization

Which of the following factors that involve to the activation of mitotic CDKs?

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#Question id: 28668

#Unit 2. Cellular Organization

In Yeast cells with a defective wee1+ gene activate mitotic CDKs prematurely and cause__

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#Question id: 28669

#Unit 2. Cellular Organization

Fission yeast cells carrying a CDK1 mutation in which the tyrosine-15 residue is replaced by phenylalanine, what will cause from this mutation?

a) Shows larger than normal cells

b) Shows smaller than normal cells

c) allows the phosphorylation of phenylalanine and normal cell activation are seen

d) premature mitotic CDK activation and entry into mitosis