منابع مشابه
Genetic Characterization of a Stable F' lac Plasmid.
A mutant F' plasmid has been isolated in a strain of Salmonella typhimurium harboring F(ts114)lac. This mutant, designated FlacS, exhibits unique genetic stability in strains of S. typhimurium and Escherichia coli. It shows no thermolability and is lost at frequencies of 20 to 100 times less than the wild-type F'lac (F42) in the same genetic backgrounds. The FlacS is also insensitive to convent...
متن کاملGenetic structure of Fusarium oxysporum f. sp. ciceri populations from chickpea in Ilam province, Iran
Chickpea (Cicer arietinum L.) is one of the most important legume crops in Iran. Wilt disease caused by Fusarium oxysporum f. sp. ciceri, is the most important soil-borne disease of chickpea in the world. This disease caused high losses in different regions during recent years. Simple sequence repeat (SSR) were used to estimate genetic diversity in 114 of F. oxysporum isolates from six counties...
متن کاملGenetic analysis of the active sites of lac repressor.
Selection methods for the isolation of i(-d) and i(s) mutants are described. Two hundred and forty-seven i(-d) and 98 i(s) mutations have been localized by deletion mapping. All i(-d) mutations map in the region of the i gene, which codes for the aminoterminal part of the lac repressor, whereas i(s) mutations map in the middle of the i gene and at the proximal end of the i(-d) cluster.
متن کاملautomatic verification of authentication protocols using genetic programming
implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...
15 صفحه اولGenetic fusions defining trp and lac operon regulatory elements.
Two procedures for easily isolating deletions that fuse the trp and lac operons are described. Using these procedures, a large number of fusion deletions have been isolated. The 1a.c ends of these deletions extend varying distances into the &I gene and the Z&c promoter-operator region. Therefore, contrary to a previous report, there does not appear to be a messenger-termination signal at the Ct...
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ژورنال
عنوان ژورنال: Japanese Journal of Microbiology
سال: 1970
ISSN: 0021-5139
DOI: 10.1111/j.1348-0421.1970.tb00542.x