METHOD OF PROVIDING NOVEL DNA SEQUENCES

摘要

The present invention relates to a method of providing novel DNA sequences encoding a polypeptide with an activity of interest, comprising the following steps: i) PCR amplification of said DNA with PCR primers with homology to (a) known gene(s) encoding a polypeptide with an activity of interest, ii) linking the obtained PCR product to a 5' structural gene sequence and a 3' structural gene sequence, iii) expressing said resulting hybrid DNA sequence, iv) screening for hybrid DNA sequences encoding a polypeptide with said activity of interest or related activity, v) isolating the hybrid DNA sequence identified in step iv). Further, the invention also relates novel DNA sequences provided according to the method of the invention and polypeptides with an activity of interest encoded by said novel DNA sequences of the invention.