title: Cloning and expression of a Bacillus subtilis Endo-1,3-1,4-beta-D-glucanase gene in Escherichia coli K12.
abstract: EcoRI fragments of DNA from Bacillus subtilis NCIB 8565, a high producer of an endo-1,3-1,4-beta-D-glucanase, were 'shot-gun' cloned in the plasmid vector pBR325. A 3.5 kb insert, carrying single restriction sites for AvaI, BglII, ClaI, PvuI and PvuII, was shown to direct the synthesis of beta-glucanase in Escherichia coli K12. Enzyme activity was demonstrated in extracellular fractions of E. coli harbouring the beta-glucanase gene; however, the largest proportion (greater than 50%) of total enzyme activity was periplasmic in location. beta-Glucanase activity and cellular location were independent of the orientation of the 3.5 kb fragment in pBR325.
mesh_terms: D001412:Bacillus subtilis / Q000201:enzymology / Q000235:genetics*; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D004269:DNA, Bacterial / Q000235:genetics; D004274:DNA, Recombinant; D004926:Escherichia coli / Q000201:enzymology / Q000235:genetics*; D005786:Gene Expression Regulation; D005798:Genes, Bacterial; D006026:Glycoside Hydrolases / Q000235:genetics* / Q000378:metabolism; D007700:Kinetics; D010957:Plasmids; D013379:Substrate Specificity
chemical_list: D004269:DNA, Bacterial; D004274:DNA, Recombinant; D004262:DNA Restriction Enzymes; D006026:Glycoside Hydrolases; C028020:licheninase