Protein synthesis in bacterial cells usually starts with a: a. cysteine residue. b. phenylalanine residue. c. formylmethionine residue. d. valine residue. e. methionine residue.

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Biology

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28 April, 22:04

Protein synthesis in bacterial cells usually starts with a: a. cysteine residue. b. phenylalanine residue. c. formylmethionine residue. d. valine residue. e. methionine residue.

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Hanna Reed · Answer 1

c. formylmethionine residue

Explanation:

The initiation codon (5' AUG 3') is present in the P site of the bacterial ribosomes and bind to the tRNA carrying formyl methionine amino acid. The formyl methionine amino acid serves to initiate the process of protein synthesis in bacteria. The initiator amino acid formyl methionine is encoded by genetic code "AUG".