AMYLASE-NEGATIVE ASPOROGENOUS MUTANT OF BACILLUS SUBTILIS USEFUL AS A HOST IN A HOST-VECTOR SYSTEM

摘要

PMYLASE-NEGATIVE, ASPOROGENOUSMUTANT OF BACILLUS SUBTILIS USEFULAS A HOST IN A HOST-VECTOR SYSTEMABSTRACT OF THE DISCLOSUREBiologically pure amylase-negative, asporogenousmutant B. subtilis ATCC 39,701 and amylase-negative mutant B. subtilisATCC 39,706 are provided. The asporogenous mutant that containsno amylase-coding gene is particularly useful as a host in ahost-vector system for recombinant DNA work directed toward theproduction of improved strains of amylase-producing microorganisms.