Results 101 to 110 of about 3,087,992 (329)

Structural and evolutionary classification of Type II restriction enzymes based on theoretical and experimental analyses

open access: yesNucleic Acids Research, 2008
For a very long time, Type II restriction enzymes (REases) have been a paradigm of ORFans: proteins with no detectable similarity to each other and to any other protein in the database, despite common cellular and biochemical function.
Jerzy Orlowski, J. Bujnicki
semanticscholar   +1 more source

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

open access: yesFEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

Meat molecular detection: sensitivity of polymerase chain reaction-restriction fragment length polymorphism in species differentiation of meat from animal origin [PDF]

open access: yes, 2007
Three restriction enzymes were used in Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) using the mitochondrial cytochrome b region to establish a differential diagnosis which detect and discriminate between three meat ...
Chai, Lay Ching   +8 more
core  

Sliding and jumping of single EcoRV restriction enzymes on non-cognate DNA

open access: yesNucleic Acids Research, 2008
The restriction endonuclease EcoRV can rapidly locate a short recognition site within long non-cognate DNA using ‘facilitated diffusion’. This process has long been attributed to a sliding mechanism, in which the enzyme first binds to the DNA via ...
I. Bonnet   +9 more
semanticscholar   +1 more source

A working model for cytoplasmic assembly of H/ACA snoRNPs

open access: yesFEBS Letters, EarlyView.
Dyskerin is the component of nuclear H/ACA ribonucleoproteins (RNPs) endowed with pseudouridine synthase catalytic activity. Two isoforms of human dyskerin have been characterized: the abundant Iso1, mainly nuclear, and the shorter Iso3, mainly cytoplasmic but occasionally imported into nuclei.
Alberto Angrisani, Maria Furia
wiley   +1 more source

Molecular variation of Trypanosoma brucei subspecies as revealed by AFLP fingerprinting [PDF]

open access: yes, 2002
Genetic analysis of Trypanosoma spp. depends on the detection of variation between strains. We have used the amplified fragment length polymorphism (AFLP) technique to develop a convenient and reliable method for genetic characterization of Trypanosome ...
Agbo, E.E.C.   +3 more
core   +7 more sources

Universal Linker and Ligation Procedures for Construction of Genomic DNA Libraries Enriched for Microsatellites

open access: yesBioTechniques, 1999
Microsatellite loci are highly informative genetic markers useful for population genetic studies, linkage mapping and parentage determination. Methods to identify novel microsatellite loci commonly use subtractive hybridization to enrich smallinsert ...
Matthew B. Hamilton   +3 more
doaj   +1 more source

Mechanistic basis for inhibition of the extended‐spectrum β‐lactamase GES‐1 by enmetazobactam and tazobactam

open access: yesFEBS Letters, EarlyView.
Antimicrobial resistance (AMR) is of huge importance, resulting in over 1 million deaths each year. Here, we describe how a new drug, enmetazobactam, designed to help fight resistant bacterial diseases, inhibits a key enzyme (GES‐1) responsible for AMR. Our data show it is a more potent inhibitor than the related tazobactam, with high‐level computation
Michael Beer   +10 more
wiley   +1 more source

Accessibility of promoter DNA is not the primary determinant of chromatin-mediated gene regulation [PDF]

open access: yes, 2019
DNA accessibility is thought to be of major importance in regulating gene expression. We test this hypothesis using a restriction enzyme as a probe of chromatin structure and as a proxy for transcription factors.
Chereji, Razvan V.   +4 more
core   +1 more source

Novel protein fold discovered in the PabI family of restriction enzymes

open access: yesNucleic Acids Research, 2007
Although structures of many DNA-binding proteins have been solved, they fall into a limited number of folds. Here, we describe an approach that led to the finding of a novel DNA-binding fold. Based on the behavior of Type II restriction–modification gene
K. Miyazono   +10 more
semanticscholar   +1 more source

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