In amino acid substitutions, what does the letter before the
number mean? What does the number mean? What does the letter after
the number mean?
Variant Amino acid substitutions IX K112D, M134D, Y139C, I157M R33Q, D34N, K35D, K112D, M134D, Y139C, I157M XI R33G, K112D, M134D, Y139C. I157M