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.
Topology of the null target motif HMM. The LL (leading), L and TL (trailing) states emit low information content columns before, within and after the ‘core’, respectively. The H state emits columns with high information content. The I and T state are the silent initial and terminal states, respectively.
