sentences:  To date no definite 3D structure has been proposed.After the cDNA nucleotide sequence of batroxobin from "Bothrops moojeni" was determined back in 1986, a research group from the Kyoto Sangyo university successfully expressed the cDNA for batroxobin in E. Coli in 1990 The recognition sequence for thrombin was used to obtain mature batroxobin.The fusion protein which was obtained was insoluble and was easily purified.