Abstract
Bioconversion of atmospheric carbon dioxide to ethylene was studied in a recombinant cyanobacterium. The gene for the ethylene-forming enzyme ofPseudomonas syringae pv.phaseolicola PK2 was cloned and expressed in the cyanobacteriumSynechococcus PCC7942 R2-SPc by use of a shuttle vector pUC303. The ethylene-forming activityin vivo ofSynechococcus PCC7942 R2-SPc that carried the gene for the ethylene-forming enzyme ofP. syringae pv.phaseolicola PK2 was one-fifth of that ofE. coli JM109 that harbored the same plasmid. The enzyme accounted for 0.021% by weight of the total soluble protein inSynechococcus PCC7942 R2-SPc.
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