METHODS FOR TRANSFERRING GENE INTO CHROMOSOME

摘要

Method for transferring a foreign gene into a host chromosome by contrived procedures to integrate the foreign gene into a vector by utilizing a lysogenic phage, for the purpose of deleting unnecessary genes derived from the vector or the like, except for the foreign gene. One of the inventive method comprises: a first step for preparing a vector with a lysogenic phage integration site (attP site) arranged between a first partial sequence of the objective foreign gene to be transferred but lacking one terminal region thereof and a second partial sequence of the gene but lacking the other terminal region and having an overlapping region with a portion of the first partial sequence; a second step for integrating the vector obtained in the first step into the host chromosome; and a third step for screening from among the recombinants obtained in the second step a recombinant from which unnecessary genes originating in the vector have been deleted owing to the homologous recombination mechanism functioning in the overlapping region between the first and second partial sequences. <IMAGE>