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What Is a PEST Sequence in a Protein

Question 9

Multiple Choice

What is a PEST sequence in a protein?


A) a sequence where phosphorylation occurs at every serine and tyrosine
B) a sequence that confers resistance to cathepsin-mediated proteolysis
C) a sequence of phenylalanine-glutamate-serine-threonine that is found in many proteins with half lives less than 2 hours
D) a sequence that causes ubiquitination of the protein followed by degradation
E) none of the above

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