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.
Electrospray mass spectrum of (AGG)4A in the presence 150 mM ammonium acetate. The final single strand RNA concentration was 18 μM. 10% v/v of methanol was added 1 h before measurement. The peak annotation [n]z- indicates the number of strands (n) and the total charge (z). The distribution of the number of ammonium ions preserved in the structure is shown in the inset. The distribution is presented at three bias voltages.
