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.
Contribution rates of principal components for each segment length (6–22 residues long). The first five principal contributions, Q1 (filled squares), Q2 (filled triangles), Q3 (filled circles), Q4 (empty triangles), and Q5 (empty circles), are shown. The bold line indicates the cumulative contribution of the first three principal components, S1–3.
