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.
Multiple-sequence alignment displaying the LT domain of Gram-positive Family 1 LTs. The sequence of a C. difficile SleB homologue is included for comparison, although it is not known whether this protein is an LT. The asterisk denotes the position of the catalytic residue. A color version of this figure is available at www.tandfonline.com/ibmg.
