Results 71 to 80 of about 93,488 (303)

Biologically‐oriented alveolar ridge preservation to correct bone dehiscence at immediate implant placement

open access: yesClinical Advances in Periodontics, EarlyView.
Abstract Background The purpose of the present case study is to describe the application of a modification of the Biologically‐oriented Alveolar Ridge Preservation (BARP) principles in cases of peri‐implant bone dehiscence (PIBD) due to a compromised alveolus at immediate implant placement (IIP).
Leonardo Trombelli, Tommaso Grenzi
wiley   +1 more source

Electronic analogue of DNA [PDF]

open access: yesКомпьютерные исследования и моделирование, 2017
It is known that the internal mobility of DNA molecules plays an important role in the functioning of these molecules. This explains the great interest of researchers in studying the internal dynamics of DNA.
L. V. Yakushevich
doaj   +1 more source

Complexation of DNA with Cationic Surfactant

open access: yes, 1999
Transfection of an anionic polynucleotide through a negatively charged membrane is an important problem in genetic engineering. The direct association of cationic surfactant to DNA decreases the effective negative charge of the nucleic acid, allowing the
Akhtar   +30 more
core   +2 more sources

Micro-RNAs of the miR-15 family modulate cardiomyocyte survival and cardiac repair [PDF]

open access: yes, 2015
A family of microRNAs, called the miR-15 family, which includes miR-195, are shown to be up-regulated during pathological cardiac remodeling and repress the expression of mRNAs required for cell proliferation and survival, with consequent loss of ...
Olson, Eric N., van Rooij, Eva
core   +1 more source

Analytical Study of Lanolin as Potential Biomarker of Prehistoric Sheep‐Shearing Practice

open access: yesChemistry–Methods, EarlyView.
Lanolin, a complex wax found on sheep wool, accumulates on shearing tools, such as flint and obsidian blades, used since the Neolithic. This study explores lanolin's degradation patterns as a potential biomarker for prehistoric sheep‐shearing practices, employing micro‐Fourier transformed infrared spectroscopy, hyperspectral imaging, and gas ...
Claudia Adsuar Fuster   +8 more
wiley   +1 more source

Defects in Polynucleotide phosphorylase impairs virulence in Escherichia coli O157:H7

open access: yesFrontiers in Microbiology, 2015
Polynucleotide phosphorylase (PNPase) is reported to regulate virulence in Salmonella, Yersinia spp. and Campylobacter jejuni, yet its role in Escherichia coli O157:H7 has not been investigated. To gain insights into its roles in E.
Jia eHu, Jia eHu, Meijun eZhu
doaj   +1 more source

ENZYMATIC SYNTHESIS OF POLYNUCLEOTIDES

open access: yesJournal of Biological Chemistry, 1957
SUMMARY The relative activity toward different nucleoside diphosphates remains essentially unchanged after 500-fold purification of polynucleotide phosphorylase of Azotobacter v&elan&i suggesting that a single enzyme is involved. The purified enzyme, virtually free of nuclease, contains small amounts of an oligoribonucleotide (with adenine, guanine ...
Matthys Staehelin   +2 more
openaire   +3 more sources

Mechanism of RNA 2′,3′-cyclic phosphate end healing by T4 polynucleotide kinase–phosphatase

open access: yesNucleic Acids Research, 2012
T4 polynucleotide kinase–phosphatase (Pnkp) exemplifies a family of enzymes with 5′-kinase and 3′-phosphatase activities that function in nucleic acid repair.
Ushati Das, S. Shuman
semanticscholar   +1 more source

Sequences for differential diagnostic of Ehrlichia ruminantium and use thereof [PDF]

open access: yes, 2006
The invention provides genes that are unique either to Ehrlichia ruminantium strain Gardel or to Ehrlichia ruminantium strain Welgevonden, or allelic couples which are present in both strains but whose sequences differ between the two strains, as genetic
Demaille, Jacques   +3 more
core  

Direct comparison of nick-joining activity of the nucleic acid ligases from bacteriophage T4 [PDF]

open access: yes, 2006
The genome of bacteriophage T4 encodes three polynucleotide ligases, which seal the backbone of nucleic acids during infection of host bacteria. The T4Dnl (T4 DNA ligase) and two RNA ligases [T4Rnl1 (T4 RNA ligase 1) and T4Rnl2] join a diverse array of ...
Amitsur   +61 more
core   +4 more sources

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