Invariant Amino Acids in a Protein are Presumed

Question

Invariant amino acids in a protein are presumed:
A) To be unimportant in the structure and function of the protein
B) To be essential to the structure and function of the protein
C) Always to occur at the beginning of the amino acid sequence of an enzyme
D) Always to occur at the end of the amino acid sequence of an enzyme
E) To be part of the prosthetic group

Accepted Answer

Invariant amino acids are those that remain unchanged across different species or variants of a protein, suggesting they play crucial roles in the protein's structure and/or function. Changes in these amino acids could disrupt the protein's ability to perform its biological functions.