You know that the protein you want to purify from a natural source forms a multimer with multiple sub-units giving a molecular weight in solution much bigger than visualised denatured on SDS-PAGE. There is only a small amount of the target protein in the total protein sample. Which of the following is an appropriate purification strategy?

TLS Online TPP Program

#Question id: 1096

#Unit 4. Cell Communication and Cell Signaling

Which of the following processes generally requires protein phosphorylation?

TLS Online TPP Program

#Question id: 2870

#Unit 2. Cellular Organization

In Escherichia coli, the synthesis of tryptophan is controlled by the tryptophan operon that is repressed in the presence of excessive tryptophan. When a mutant strain that has lost the regulatory gene of the tryptophan operon is placed in a medium that contains all nutrients the cells need to grow except tryptophan, which of the following will occur?

TLS Online TPP Program

#Question id: 1451

#Unit 4. Cell Communication and Cell Signaling

Burkitt’s lymphoma results from the overproduction of:

TLS Online TPP Program

#Question id: 33398

#Unit 1. Molecules and their Interaction Relevant to Biology

Immunoglobulin fold is characterised by

TLS Online TPP Program

#Question id: 8841

#Unit 9. Diversity of Life Forms

Adaptive radiations can be a direct consequence of four of the following five factors. Select the exception.