| 摘要 |
The present invention relates to recombinant vectors which are useful for direct selection of colonies harboring recombinant plasmids, on basis of the loss of expression of a gene coding for an AsiA polypeptide from E. coli bacteriophage T4, the expression of which would normally have resulted in toxicity to the bacterial host. The invention also relates to host cells harboring the said vectors, as well as to methods utilizing the said vectors, for the selection of nucleic acid clones.
|
