Joint BioEnergy Institute, Emeryville, CA 94608, USA, Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA and.|Joint BioEnergy Institute, Emeryville, CA 94608, USA, Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA and Biological and Engineering Sciences Center, Sandia National Laboratories, Livermore, CA 94551, USA.|Joint BioEnergy Institute, Emeryville, CA 94608, USA, Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA and.