Transcription regulation of the EcoRV restriction-modification system
نویسندگان
چکیده
منابع مشابه
Transcription regulation of the EcoRV restriction–modification system
When a plasmid containing restriction-modification (R-M) genes enters a naïve host, unmodified host DNA can be destroyed by restriction endonuclease. Therefore, expression of R-M genes must be regulated to ensure that enough methyltransferase is produced and that host DNA is methylated before the endonuclease synthesis begins. In several R-M systems, specialized Control (C) proteins coordinate ...
متن کاملTranscription regulation of restriction-modification system Esp1396I
The convergently transcribed restriction (R) and methylase (M) genes of the Restriction-Modification system Esp1396I are tightly regulated by a controller (C) protein that forms part of the CR operon. We have mapped the transcriptional start sites from each promoter and examined the regulatory role of C.Esp1396I in vivo and in vitro. C-protein binding at the CR and M promoters was analyzed by D...
متن کاملTranscription regulation of restriction-modification system Ecl18kI
Restriction-modification (R-M) system Ecl18kI is representative of R-M systems whose coordinated transcription is achieved through a separate DNA-binding domain of the methyltransferase. M.Ecl18kI recognizes an operator sequence located in the noncoding region that separates the divergently transcribed R and M genes. Here we show that, contrary to previous predictions, the two ecl18kI promoters...
متن کاملTranscription regulation of the type II restriction-modification system AhdI
The Restriction-modification system AhdI contains two convergent transcription units, one with genes encoding methyltransferase subunits M and S and another with genes encoding the controller (C) protein and the restriction endonuclease (R). We show that AhdI transcription is controlled by two independent regulatory loops that are well-optimized to ensure successful establishment in a naïve bac...
متن کاملFluorescent substrates for the EcoRV restriction endonuclease.
In the presence of Mg2+, the EcoRV restriction endonuclease cleaves DNA specifically at the sequence GAT'ATC (where denotes the point of scission) [ I ] . Even the change of a single base pair within this sequence will lead to a million fold reduction of EcoRV activity [2]. Paradoxically, gel retardation experiments in the absence of Mg2+ show that, unlike EcoRl and many other type 11 restricti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 2005
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/gki998