Help with Protein Modification

Practice Questions

GRE Subject Test: Biochemistry, Cell, and Molecular Biology › Help with Protein Modification

Questions
7
1

An isomerase __________.

2

Lipidation is a post-translational modification to a protein that often targets that protein to the plasma membrane. Knowing that lipidation involves covalent bonding of a fatty acid group to a protein, which of the following molecules would be most likely to be attached to a protein for anchorage to a membrane?

3

In order for kinases to modify their substrates, what small molecule is needed for this reversible post-translational modification?

4

Which of the following is a protein modification that can initiate the degradation of the modified protein?

5

Ubiquitination of proteins is a form of post-translational modification on proteins. Which of the following cellular processes is protein ubiquitination not part of?

6

What type of enzyme adds a phosphate group to a protein?

7

Which of the following is a common post-translational modification used to target proteins to the lysosome?

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