Theoretically,the number of different proteins that can be made from 50 amino acids is

Question

Quizplus · Accepted Answer

Each amino acid in a protein is chosen from a pool of 20 different amino acids (excluding non-standard or modified amino acids). Therefore, for a protein of length 50 amino acids, the total number of possible combinations is 20^50, which is approximately 1.27 x 10^65. Option C, 20^(50-1) x (50 choose 1) x 20^(0-1) + 20^(50-2) x (50 choose 2) x 20^(0-2) + ... + 20^(0-1) x (50 choose 50) x 20^(50-1), represents the total number of possible protein sequences that can be made by choosing 1 amino acid from 20 for the first position, then choosing 1 amino acid from 20 for the second position, and so on, up to choosing 1 amino acid from 20 for the 50th position. This expression simplifies to 20⁵⁰.

Theoretically,the Number of Different Proteins That Can Be Made from 50