摘要:
A process for transformation of a microorganism by introduction of a plasmid therein, the microorganism being thermophilic and gram-positive or gram-variable, and vector plasmids used therefor.
摘要:
A plasmid pOA15 in isolated form having the property of conferring pock-forming ability on Streptomyces griseus (ATCC 10137) and a molecular length of about 10 kb, and showing such sensitivity that(a) it has one restriction site recognized by BamHI,(b) it has one restriction site recognized by EcoRI,(c) it has 7 restriction sites recognized by SalI, and(d) it is not cleaved by BglII, HindIII, KpnI, PstI and XbaI,and a biologically pure culture of a microorganism containing the above plasmid.
摘要:
The plasmid of the present invention contains Leu 2 gene (.beta.-isopropylmaleate dehydrogenase gene) from Saccharomycopsis lipolytica and an autonomously replicating sequence (hereafter referred to as ARS) and can be a shuttle vector between Escherichia coli and Saccharomycopsis lipolytica since it is produced from shuttle vector pVC 1 of Escherichia coli and Saccharomyces cerevisiae. An exogenous useful gene is inserted into the plasmid of the present invention, namely, shuttle vector to transform Escherichia coli, whereby a large quantity of plasmids are obtained. It becomes possible to produce a useful substance in Saccharomycopsis lipolytica as a host using the plasmid.