Changes in the substrate specificities of an enzyme during directed evolution of new functions.
Changes in the substrate specificities of an enzyme during directed evolution of new functions.
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新功能定向进化过程中酶底物特异性的变化。
DOI:
10.1021/bi00517a015
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发表时间:
1981
期刊:
影响因子:
2.9
通讯作者:
Hall,BG
中科院分区:
文献类型:
--
作者:
Hall,BG
The ebg system of Escherichia coli K12 is being used as a model to study the acquisitive evolution of new metabolic functions. Beginning with a strain of E. coli K12 bearing a large deletion within the lacZ (/3-galactosidase) gene, I have selected a series of spontaneous mutant strains that have evolved the ability to utilize lactose and other/3-galactoside sugars as sole carbon and energy sources (Hall & Hard, 1974; Hall, 1976a, b, 1977, 1978; Hall & Zuzel, 1980). The spontaneous mutations occur in theebg (evolved/3-galactosidase) operon located at 66 min on the E. coli map (Hall & Hard, 1975; Bachmann & Low, 1980). The operon is under negative control by the product of the tightly linked ebgR gene (Hall & Hard, 1975). Mutations in ebgR are important to the evolutionary process (Hall & Clarke, 1977) but are outside the scope of this paper. The structural gene of interest is ebgA which specifies a 120000 molecular weight polypeptide that is the subunit of the homohexameric ebg/3-galactosidase (Hall, f From the Microbiology Section U-44, Biological Sciences Group,
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DOI:
10.1093/jnci/72.4.913
发表时间:
1984-04
期刊:
Journal of the National Cancer Institute
影响因子:
--
作者:
J. Kozlowski;J. Kozlowski;I. Hart;I. Fidler;N. Hanna
通讯作者:
J. Kozlowski;J. Kozlowski;I. Hart;I. Fidler;N. Hanna
DOI:
10.1016/s0021-9258(17)43350-3
发表时间:
1984-02
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Nakajima;T. Irimura;N. Ferrante;G. Nicolson
通讯作者:
M. Nakajima;T. Irimura;N. Ferrante;G. Nicolson
DOI:
--
发表时间:
1980
期刊:
影响因子:
--
作者:
K. Nagasawa;Y. Inoue
通讯作者:
Y. Inoue
影响因子:
11.2
作者:
K. M. Miner;T. Kawaguchi;G. W. Uba;G. Nicolson
通讯作者:
G. Nicolson
影响因子:
2.9
作者:
Irimura,T;Nakajima,M;DiFerrante,N;Nicolson,GL
通讯作者:
Nicolson,GL