Abstract:
(a) preparing lipase producing recombinant plasmid pJH92 with use of lipase coding DNA sequence-contg. gener fragment dirived from Pseudomonas fluorescens; (b) separating the DNA fragment contg. lipse gene from pJH92; (c) inserting the DNA fragment into tac promotor-contg. high expression plasmid pTTQ19 to obtain the plasmid pTTY2; (d) transforming the pTTY2 into E. coli and culturing; and (e) extracting and separating the lipase inculusion body from the E. coli culture, and refolding. E. coli BL21 contg. high expression plasmid pTTY2 is prepd. and heat resistant lipase can be produced with high yield by industrialmass prodn..