Secretion to the growth medium of an α-amylase by Escherichia coli clones carrying a Bacillus laterosporus gene

作者: H.K. Manonmani , A.A.M. Kunhi

DOI: 10.1023/A:1008996509667

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摘要: α-Amylase gene from Bacillus laterosporus P3 was cloned and expressed in Escherichia coli HB101 DH5α. Up to 92% of the product secreted into medium by recombinant E. coli. The crude enzyme showed improved functionality terms activity at a wider pH range higher temperature, as compared donor strain. due absence contaminating protease which co-produced Sub-cloning α-amylase using promoter-probe vector, pKT240 DH5α indicated presence promoter B. fragment.

参考文章(16)
Peter Bernfeld, Amylases, alpha and beta Methods in enzymology I. pp. 149- 158 ,(1955)
Harold C. Neu, Leon A. Heppel, The release of enzymes from Escherichia coli by osmotic shock and during the formation of spheroplasts. Journal of Biological Chemistry. ,vol. 240, pp. 3685- 3692 ,(1965) , 10.1016/S0021-9258(18)97200-5
Francisco Bolivar, Keith Backman, [16] Plasmids of Escherichia coli as cloning vectors Methods in Enzymology. ,vol. 68, pp. 245- 267 ,(1979) , 10.1016/0076-6879(79)68018-7
F G Priest, Extracellular enzyme synthesis in the genus Bacillus. Bacteriological Reviews. ,vol. 41, pp. 711- 753 ,(1977) , 10.1128/BR.41.3.711-753.1977
N. Tsukagoshi, H. Ihara, H. Yamagata, S. Udaka, Cloning and expression of a thermophilic α-amylase gene from Bacillus stearothermophilus in Escherichia coli Molecular Genetics and Genomics. ,vol. 193, pp. 58- 63 ,(1984) , 10.1007/BF00327414
Miroslawa M. Bagdasarian, Egon Amann, Rudolf Lurz, Beate Rückert, Michael Bagdasarian, Activity of the hybrid trp-lac (tac) promoter of Escherichia coli in Pseudomonas putida. Construction of broad-host-range, controlled-expression vectors Gene. ,vol. 26, pp. 273- 282 ,(1983) , 10.1016/0378-1119(83)90197-X
Pierre Cornelis, Colette Digneffe, Karine Willemot, Cloning and Expression of a Bacillus-coagulans Amylase Gene in Escherichia-coli Molecular Genetics and Genomics. ,vol. 186, pp. 507- 511 ,(1982) , 10.1007/BF00337957
A. A. Mohammad Kunhi, R. Singh, Standardization of assay procedure and some properties of ribonuclease from Aspergillus candidus. Folia Microbiologica. ,vol. 26, pp. 328- 333 ,(1981) , 10.1007/BF02927261
Hiroshi HONDA, Toshiaki KUDO, Koki HORIKOSHI, Selective excretion of alkaline xylanase by escherichia coli carrying PCX311 Agricultural and biological chemistry. ,vol. 49, pp. 3011- 3015 ,(1985) , 10.1271/BBB1961.49.3011