アグロバクテリウム
Roundup Ready Soybeans express a version of EPSPS from the CP4 strain of the bacteria "Agrobacterium tumefaciens", expression of which is regulated by an enhanced 35S promoter (E35S) from cauliflower mosaic virus (CaMV), a chloroplast transit peptide (CTP4) coding sequence from "Petunia hybrida", and a nopaline synthase (nos 3') transcriptional termination element from "Agrobacterium tumefaciens". The plasmid with EPSPS and the other genetic elements mentioned above was inserted into soybean germplasm with a gene gun by scientists at Monsanto and Asgrow. The patent on the first generation of Roundup Ready soybeans expired in March 2015.