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.
Different nucleotides have different colors to facilitate recognition of differences between the sequences. Parentheses represent nucleotide pairings, and dots represent unpaired nucleotides. Note that NMR structure has one additional outer helix to facilitate expression [51].
