Patent ID: 8227237

Claim:
A method for the biogenic synthesis of sucrose for biofuel production, comprising: culturing an engineered photosynthetic microbe in a culture medium, wherein said photosynthetic microbe comprises a glucose facilitated diffusion transporter, wherein said glucose facilitated diffusion transporter has an amino acid sequence identical to the sequence encoded by nucleotides 2680-4105 of SEQ ID NO: 11, and wherein one or more glycogen synthesis genes in said photosynthetic microbe are attenuated or absent by mutation; and exposing said engineered photosynthetic microbe to light and carbon dioxide, wherein said exposure results in the conversion of said carbon dioxide by said engineered photosynthetic microbe into sucrose, wherein the amount of sucrose exported by said microbe is at least two-fold greater than the amount of said sucrose exported by an otherwise identical photosynthetic microbe, cultured under identical conditions, but lacking said recombinant glucose facilitated diffusion transporter and lacking said mutation in said one or more glycogen synthesis genes which attenuates or renders absent the expression of said one or more glycogen synthesis genes.