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.
Other conditions are as for Figure 3, except that the chemical shift ranges in each box are ±0.015 p.p.m. for 1H and ±0.075 p.p.m. for 15N. Single-letter amino acid codes are used.
