Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Histograms showing PTP1B’s specificity toward multiply phosphorylated peptides. The y axis represents the number of selected peptides that contained a particular amino acid (x axis) at a given position within the peptide (X1 to X6, on the z axis). M, Nle; Y, F2Y.
