[1] Oregon State Univ, Dept Microbiol, Corvallis, OR 97331 USA
[2] Oregon State Univ, Ctr Gene Res & Biotechnol, Corvallis, OR 97331 USA
[3] Diversa Corp, San Diego, CA 92121 USA
[4] Univ Hawaii, Sch Ocean & Earth Sci & Technol, Hawaii Inst Marine Biol, Kaneohe, HI 96744 USA