Surgery Guanosine triphosphate (GTP) is required by which of the following steps in protein synthesis? A Aminoacyl-tRNA synthetase activation of amino acids B Attachment of ribosomes to endoplasmic reticulum C Translocation of tRNA-nascent protein complex from A to P sites D Attachment of mRNA to ribosomes 💡 Explanation Guanosine triphosphate (GTP) is required by which of the following steps in protein synthesis? ✓ Correct Answer: C. Translocation of tRNA-nascent protein complex from A to P sites