Question

please help

Protein synthesis proceeds in which direction? a. from the C-terminus to the N-terminusa 'b. from the middle towards the two endsa 'c. from the N-terminus to the C-terminus do the direction varies from one protein to another

Answer 1

In the molecule of a peptide, the amino acid residue on one end has an amine group on the alpha carbon. This amino acid residue is called the N-terminal of the peptide. The amino acid residue on the other end has a carboxylic acid group on the alpha carbon. This amino acid is called the C-terminal.

eg:

a a = CH3 CH(CH3)2 CH SH N-terminal C-terminal

When the structure of a peptide is drawn horizontally, by convention, the N-terminal is placed on the left and the C-terminal on the right.

amino acid residue amino acid residue amino acid residue amino acid residue amino acid residue A A N-terminal C-terminal peptide bond peptide bond peptide bond peptide bond

so as we know direction of protein synthesis is from N terminus to C terminus so the correct option is c.

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