Nicotinamide mononucleotide synthetase is the key enzyme for an alternative route of NAD biosynthesis in Francisella tularensis.
Sorci L, Martynowski D, Rodionov DA, Eyobo Y, Zogaj X, Klose KE, Nikolaev EV, Magni G, Zhang H, Osterman AL.
Proc Natl Acad Sci U S A. 2009 Mar 3; 106(9):3083-8. Epub 2009 Feb 9.
[Proc Natl Acad Sci U S A. 2009]