The number of tripeptides formed by three different amino acids using each amino acid once is .

Question

The number of tripeptides formed by three different amino acids using each amino acid once is  .

Canvas Classes · Accepted Answer

Counting tripeptide sequences:

Given 3 different amino acids: A, B, C — each used exactly once in a tripeptide.

The number of arrangements = number of permutations of 3 distinct objects =

All possible sequences:
1. A–B–C
2. A–C–B
3. B–A–C
4. B–C–A
5. C–A–B
6. C–B–A

Each sequence is a different tripeptide because the N-terminus and C-terminus are distinct ends, so order matters.

Final Answer: 6

More questions from Biomolecules