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    • 9. 发明专利
    • Producing a product using shuttle vectors containing essential chloroplast genes
    • GB2475435A
    • 2011-05-18
    • GB201100928
    • 2008-10-06
    • SAPPHIRE ENERGY INC
    • MENDEZ MICHAELO'NEILL BRYANMIKKELSON KARI
    • C12N15/82C12N15/63C12N15/68C12N15/74C12N15/81
    • The functional analysis of genes frequently requires the manipulation of large genomic regions. A yeast-bacteria shuttle vector is described that can be used to clone large regions of DNA by homologous recombination. A method of producing a product is provided, comprising obtaining a plurality of vectors collectively providing all chloroplast genes necessary for photosynthesis, each vector having two homologous recombination regions, one vector having a homologous polynucleotide of interest, one vector having a yeast replication element, one having a bacterial replication element, and one having a yeast stability element/selection marker and not having the yeast replication element; assembling the vectors into an assembled genome by introducing into yeast, selecting for assembly using the stability element/selection marker, introducing the assembled chloroplast genome into a photosynthetic host organism and expressing the homologous polynucleotide to produce the product of interest. The product may be a terpene, terpenoid, fatty acid or biomass degrading enzyme. The host may be an algae or cyanobacterium. The bacterial replication element may be a P1 or F factor replication element. The yeast replication element may be a yeast centromere or autonomous replication sequence. The yeast selection marker may be URA3 and an additional marker.