Biology Stack Exchange is a question and answer site for biology researchers, academics, and students. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Does it mean the position of the amino acid in the protein sequence, or something else?

For example, I came across the phrase "S 368 phosphoryation" where S is the modified residue and 368 is the modified residue position. What does it all mean?

share|improve this question

You are correct, the 368 stands for the position of the amino acid in the protein's sequence - this particular serine is the 368th residue in the protein counting from the amino-terminal end.

share|improve this answer
Thanks for your answer! – ktm5124 Jul 9 '14 at 2:40
@ktm5124 please accept the answer if you have found it useful. – WYSIWYG Jul 10 '14 at 12:59

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.