ISSN:0265-9247    

DOI:10.1002/bies.950020102

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0265-9247    

DOI:10.1002/bies.950020103

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractAcidophilic autotrophic thiobacilli, which are able to oxidize metal and solubilize sulphide ores, are used industrially to leach metals from mineral ores. Genetic manipulation of the thiobacilli has the potential for the production of leaching bacteria with desirable characteristics for industry. In this review we examine the development of genetic systems in the thiobacilli and the present status of molecular genetics in the group.

ISSN:0265-9247    

DOI:10.1002/bies.950020104

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractRecent work on kinetoplast DNA and on CAP‐DNA and Eco RI‐DNA complexes shows that certain sequences cause DNA to be highly bent, and that other sequences bend in response to the sequence‐specific binding of proteins. These results demonstrate that alterations of DNA structure may facilitate gene regulation and DNA pack

ISSN:0265-9247    

DOI:10.1002/bies.950020105

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractInsulin is synthesized in pancreatic B‐cells of islets of Langerhans. Understanding the mechanisms of action of B‐cytotoxins on pancreatic islets seems to be important for elucidating not only the causes of diabetes mellitus but also its prevent

ISSN:0265-9247    

DOI:10.1002/bies.950020106

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractMicroorganisms belong to the main regulators of insect populations under natural conditions. They perform this function in several ways. In the first place, bacterial metabolites exist which are as potent as chemical insecticides. In the second, entomopathogenic fungi and viruses spread deadly infections among insect populations. The use of advanced techniques in molecular biology, genetic engineering and biotechnology is increasingly expanding the potential of microorganisms as agents of insect pest control.

ISSN:0265-9247    

DOI:10.1002/bies.950020107

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractIn BioEssays, vol. I. no. 5, p. 227, P. A. Lawrence discussed the selector gene hypothesis and its implications for development. In the following article, D. Gubb presents an alternative view of the genetic control of development.

ISSN:0265-9247    

DOI:10.1002/bies.950020108

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractDuring development some cells are migratory whilst others are stationary. However, the same cell may change its behaviour depending upon its environment. Recent evidence has implicated the extracellular matrix protein fibronectin in the regulation of migratory behaviour. As the structure of this molecule becomes elucidated, it is also becoming possible to interpret this regulation in precise molecular terms.

ISSN:0265-9247    

DOI:10.1002/bies.950020109

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

摘要:

AbstractThe bulk of the DNA in eukaryotic chromatin behaves as if it is topologically relaxed; however, a subfraction can be shown to be under suercoil tension. Endonuclease S1 cuts at specific hypersentive sites in chromatin (in the promoter regions of active genes) and this enzyme cuts in the same region in supercoiled plasmids, but not in relaxed or linearized molecules. A subfraction of the minichromosomes formed after SV40 infection or microinjection of plasmid DNA into oocytes contains supercoil tension and this subfraction is thought to play an important role in transcription.

ISSN:0265-9247    

DOI:10.1002/bies.950020110

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY

ISSN:0265-9247    

DOI:10.1002/bies.950020111

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1985

数据来源: WILEY