Type I restriction enzymes and their relatives
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منابع مشابه
Type I restriction enzymes and their relatives
Type I restriction enzymes (REases) are large pentameric proteins with separate restriction (R), methylation (M) and DNA sequence-recognition (S) subunits. They were the first REases to be discovered and purified, but unlike the enormously useful Type II REases, they have yet to find a place in the enzymatic toolbox of molecular biologists. Type I enzymes have been difficult to characterize, bu...
متن کاملSURVEY AND SUMMARY Type I restriction enzymes and their relatives
Type I restriction enzymes (REases) are large pentameric proteins with separate restriction (R), methylation (M) and DNA sequence-recognition (S) subunits. They were the first REases to be discovered and purified, but unlike the enormously useful Type II REases, they have yet to find a place in the enzymatic toolbox of molecular biologists. Type I enzymes have been difficult to characterize, bu...
متن کاملRestriction enzymes and their isoschizomers.
Since the last compilation of restriction enzymes, (1) 442 new entries have been added including 13 new specificities. A complete list of these new enzymes can be found in Table I. With the growing size of the restriction enzyme database and the recognition that the most widespread use of the information is as a database for computer programs predicting restriction enzyme cleavage patterns, Tab...
متن کاملType I restriction endonucleases are true catalytic enzymes
Type I restriction endonucleases are intriguing, multifunctional complexes that restrict DNA randomly, at sites distant from the target sequence. Restriction at distant sites is facilitated by ATP hydrolysis-dependent, translocation of double-stranded DNA towards the stationary enzyme bound at the recognition sequence. Following restriction, the enzymes are thought to remain associated with the...
متن کاملStructures of the type I DNA restriction enzymes.
The article by Liu et al. (1) on the structure of type I DNA restriction and modification enzymes purports to significantly advance our understanding of these enzymes and proposes a model for their operation. While the partial structure of one of these enzymes is interesting and defines the interface between some of the subunits, the article contains many misinterpretations of the literature. I...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 2013
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/gkt847