Results 31 to 40 of about 801,714 (279)

Bubble propagation in a helicoidal molecular chain

open access: yes, 2000
We study the propagation of very large amplitude localized excitations in a model of DNA that takes explicitly into account the helicoidal structure. These excitations represent the ``transcription bubble'', where the hydrogen bonds between complementary
A. Campa   +30 more
core   +1 more source

A cellulose-based bioassay for the colorimetric detection of pathogen DNA [PDF]

open access: yes, 2014
Cellulose-paper-based colorimetric bioassays may be used at the point of sampling without sophisticated equipment. This study reports the development of a colorimetric bioassay based on cellulose that can detect pathogen DNA.
Goyal, Madhu   +3 more
core   +1 more source

Impedimetric DNA Biosensor Based on a Nanoporous Alumina Membrane for the Detection of the Specific Oligonucleotide Sequence of Dengue Virus

open access: yesSensors, 2013
A novel and integrated membrane sensing platform for DNA detection is developed based on an anodic aluminum oxide (AAO) membrane. Platinum electrodes (~50–100 nm thick) are coated directly on both sides of the alumina membrane to eliminate the solution ...
Chee-Seng Toh, Jiajia Deng
doaj   +1 more source

Factors Impacting Invader-Mediated Recognition of Double-Stranded DNA

open access: yesMolecules, 2022
The development of chemically modified oligonucleotides enabling robust, sequence-unrestricted recognition of complementary chromosomal DNA regions has been an aspirational goal for scientists for many decades.
Caroline P. Shepard   +3 more
doaj   +1 more source

Fabrication of porcine DNA biosensor based on ruthenium bipyridine complex [PDF]

open access: yes, 2016
Electrochemical DNA biosensor for detection of porcine oligonucleotides based on ruthenium (II) as label redox complex has been developed. The system of biosensor is based on the modified screen printed carbon electrode (SPE) with goldnanoparticles ...
Abd Karim, Nurul Huda   +5 more
core   +1 more source

Hyperchaotic color image encryption using eight-base DNA complementary rules and extended Zigzag transform.

open access: yesPLoS ONE
As an efficient technique to protect image content from unauthorized access, image encryption has been a hot spot in recent studies. Among various schemes of image encryption, those that utilize hyperchaotic systems and deoxyribonucleicacid (DNA ...
Bin Yang
doaj   +1 more source

Sensitive detection of multiple pathogens using a single DNA probe [PDF]

open access: yes, 2016
A simple but promising electrochemical DNA nanosensor was designed, constructed and applied to differentiate a few food-borne pathogens. The DNA probe was initially designed to have a complementary region in Vibrio parahaemolyticus (VP) genome and to ...
Abdullah, Jaafar   +4 more
core   +1 more source

Pathogenic Germline PALB2 and RAD50 Variants in Patients With Relapsed Ewing Sarcoma

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Approximately 10% of patients with Ewing sarcoma (EwS) have pathogenic germline variants. Here, we report two cases: first, a novel germline pathogenic variant in partner and localizer of BRCA2 (PALB2) in a patient with a late EwS relapse. Its impact on homologous recombination is demonstrated, and breast cancer risk is discussed.
Molly Mack   +12 more
wiley   +1 more source

Preparation of fluorescent DNA probe by solid-phase organic synthesis

open access: yeseXPRESS Polymer Letters, 2009
Fluorescent DNA probe based on fluorescence resonance energy transfer (FRET) was prepared by solid-phase organic synthesis when CdTe quantum dots (QDs) were as energy donors and Au nanoparticles (AuNPs) were as energy accepters.
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

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