Results 31 to 40 of about 87,449 (274)

Broadness and specificity: ArdB, ArdA, and Ocr against various restriction-modification systems

open access: yesFrontiers in Microbiology, 2023
ArdB, ArdA, and Ocr proteins inhibit the endonuclease activity of the type I restriction-modification enzymes (RMI). In this study, we evaluated the ability of ArdB, ArdA, and Ocr to inhibit different subtypes of Escherichia coli RMI systems (IA, IB, and
Anna A. Kudryavtseva   +12 more
doaj   +1 more source

The helical domain of the EcoR124I motor subunit participates in ATPase activity and dsDNA translocation [PDF]

open access: yesPeerJ, 2017
Type I restriction-modification enzymes are multisubunit, multifunctional molecular machines that recognize specific DNA target sequences, and their multisubunit organization underlies their multifunctionality.
Vitali Bialevich   +8 more
doaj   +2 more sources

The Hyperthermophilic Restriction-Modification Systems of Thermococcus kodakarensis Protect Genome Integrity

open access: yesFrontiers in Microbiology, 2021
Thermococcus kodakarensis (T. kodakarensis), a hyperthermophilic, genetically accessible model archaeon, encodes two putative restriction modification (R-M) defense systems, TkoI and TkoII.
Kelly M. Zatopek   +6 more
doaj   +1 more source

Interaction between EcoRII restriction/modification enzymes and synthetic DNA fragments. Synthesis of substrates containing a single recognition site [PDF]

open access: diamondBiopolymers and Cell, 1987
Светлана А. Кузнецова   +7 more
openalex   +2 more sources

Time-resolved fluorescence of 2-aminopurine in DNA duplexes in the presence of the EcoP15I Type III restriction–modification enzyme

open access: hybridBiochemical and Biophysical Research Communications, 2014
EcoP15I is a Type III DNA restriction and modification enzyme of Escherichia coli. We show that it contains two modification (Mod) subunits for sequence-specific methylation of DNA and one copy of a restriction endonuclease (Res) subunit for cleavage of DNA containing unmethylated target sequences. Previously the Mod2 dimer in the presence of cofactors
Long Ma   +4 more
openalex   +4 more sources

Fused eco29kIR- and M genes coding for a fully functional hybrid polypeptide as a model of molecular evolution of restriction-modification systems

open access: yesBMC Evolutionary Biology, 2011
Background The discovery of restriction endonucleases and modification DNA methyltransferases, key instruments of genetic engineering, opened a new era of molecular biology through development of the recombinant DNA technology.
Solonin Alexander S   +2 more
doaj   +1 more source

Functional coupling of duplex translocation to DNA cleavage in a type I restriction enzyme. [PDF]

open access: yesPLoS ONE, 2015
Type I restriction-modification enzymes are multifunctional heteromeric complexes with DNA cleavage and ATP-dependent DNA translocation activities located on motor subunit HsdR.
Eva Csefalvay   +13 more
doaj   +1 more source

An alternative approach to study the enzymatic specificities of the CfrBI restriction–modification system

open access: yesHeliyon, 2019
Restriction–modification systems (RMS) are the main gene-engineering tools and a suitable model to study the molecular mechanisms of catalysis and DNA–protein interactions.
Marina V. Zakharova   +3 more
doaj   +1 more source

Structural and functional analysis of the symmetrical Type I restriction endonuclease R.EcoR124I<sub>NT</sub>

open access: yesPLoS ONE, 2012
Type I restriction-modification (RM) systems are comprised of two multi-subunit enzymes, the methyltransferase (∼160 kDa), responsible for methylation of DNA, and the restriction endonuclease (∼400 kDa), responsible for DNA cleavage. Both enzymes share a
James E Taylor   +4 more
doaj   +1 more source

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