نتایج جستجو برای: biochemical assay

تعداد نتایج: 349260  

Journal: :Journal of visualized experiments : JoVE 2010
Orna Ernst Tsaffrir Zor

Determination of microgram quantities of protein in the Bradford Coomassie brilliant blue assay is accomplished by measurement of absorbance at 590 nm. This most common assay enables rapid and simple protein quantification in cell lysates, cellular fractions, or recombinant protein samples, for the purpose of normalization of biochemical measurements. However, an intrinsic nonlinearity compromi...

2014
Qian Gao Zhen Wang Zhenlong Liu Xiaoyu Li Yongxin Zhang Zhizhen Zhang Shan Cen

Influenza is one of the most common infections threatening public health worldwide and is caused by the influenza virus. Rapid emergence of drug resistance has led to an urgent need to develop new anti-influenza inhibitors. In this study we established a 293T cell line that constitutively synthesizes a virus-based negative strand RNA, which expresses Gaussia luciferase upon influenza A virus in...

Journal: :Analytical chemistry 2011
Sari Pihlasalo Jonna Kirjavainen Pekka Hänninen Harri Härmä

Nanoparticle assay utilizing time-resolved luminescence resonance energy transfer (TR-LRET) was developed for the detection of protein aggregation. This mix-and-measure nanoparticle assay is based on the competitive adsorption of the sample and the acceptor-labeled protein to donor europium(III) polystyrene particles. The protein aggregation was detected with the developed TR-LRET nanoparticle ...

2012
Christoph O. Randak Amanda R. Ver Heul Michael J. Welsh

Cystic fibrosis transmembrane conductance regulator (CFTR) is a membrane-spanning adenosine 5'-triphosphate (ATP)-binding cassette (ABC) transporter. ABC transporters and other nuclear and cytoplasmic ABC proteins have ATPase activity that is coupled to their biological function. Recent studies with CFTR and two nonmembrane-bound ABC proteins, the DNA repair enzyme Rad50 and a structural mainte...

2008
Arun Kumar Ramiah Sivakanesan Susil Gunasekera

Objectives: Currently, there are no well-defined biochemical markers for identification of myocardial ischemia in normolipidaemic AMI individuals. Biochemical markers such as CK-MB, cTnI and myoglobin, used in assessing cellular necrosis, are not suitable for assessing myocardial ischemia. The introduction of the Ischemia Modified Albumin (IMA) assay for the first time provides emergency physic...

2014
Keith H Ansell Hayley M Jones David Whalley Alisdair Hearn Debra L Taylor Emmanuel C Patin Timothy M Chapman Simon A Osborne Claire Wallace Kristian Birchall Jonathan Large Nathalie Bouloc Ela Smiljanic-Hurley Barbara Clough Robert W Moon Judith L Green Anthony A Holder

PfCDPK1 is a Plasmodium falciparum calcium-dependent protein kinase, which has been identified as a potential target for novel antimalarial chemotherapeutics. In order to further investigate the role of PfCDPK1, we established a high-throughput in vitro biochemical assay and used it to screen a library of over 35,000 small molecules. Five chemical series of inhibitors were initially identified ...

Journal: :Journal of clinical microbiology 2007
Ruth Ann Luna Lea R Fasciano Shaunte C Jones Bobby L Boyanton Trang T Ton James Versalovic

Sole reliance on biochemical methods can limit the clinical microbiology laboratory's ability to identify bacterial pathogens. This study describes the incorporation of DNA pyrosequencing-based identification for routine pathogen identification of atypical clinical isolates in a large children's hospital. The assay capitalized on the highly conserved nature of 16S rRNA genes by positioning ampl...

Journal: :Journal of water and health 2008
A Mark Ibekwe Stephen R Lyon

When bacterial pathogens from livestock contaminate drinking water supplies, they can cause different forms of gastroenteritis. The objective of this study was to enumerate the concentrations of fecal indicator (Escherichia coli and enterococci) in surface water in order to determine removal efficiency by sand filtration. The concentrations of different indicator bacterial species were determin...

2017
Johanna M Jansen Charles Wartchow Wolfgang Jahnke Susan Fong Tiffany Tsang Keith Pfister Tatiana Zavorotinskaya Dirksen Bussiere Jan Marie Cheng Kenneth Crawford Yumin Dai Jeffrey Dove Eric Fang Yun Feng Jean-Michel Florent John Fuller Alvar D Gossert Mohammad Hekmat-Nejad Chrystèle Henry Julia Klopp William P Lenahan Andreas Lingel Sylvia Ma Arndt Meyer Yuji Mishina Jamie Narberes Gwynn Pardee Savithri Ramurthy Sebastien Rieffel Darrin Stuart Sharadha Subramanian Laura Tandeske Stephania Widger Armin Widmer Aurelie Winterhalter Isabel Zaror Stephen Hardy

RAS mutations lead to a constitutively active oncogenic protein that signals through multiple effector pathways. In this chemical biology study, we describe a novel coupled biochemical assay that measures activation of the effector BRAF by prenylated KRASG12V in a lipid-dependent manner. Using this assay, we discovered compounds that block biochemical and cellular functions of KRASG12V with low...

Journal: :مجله پزشکی مولکولی 0
abbas ebrahimi- kalan department of neurosciences, faculty of advanced medical sciences, tabriz university of medical sciences, tabriz, iran shahram ahmadian clinical laboratory, imam reza hospital, tabriz university of medical sciences, tabriz, iran hamid tayefi-nasrabadi department of anatomical, faculty of medicine, tabriz university of medical sciences, tabriz, mohammad pourhassan-moghaddam department of medical biotechnology, faculty of advanced medical sciences, tabriz university of medical sciences, tabriz, iran c ian wark research institute, mawson lakes campus, university of south australia, mawson lakes,

introduction: telomeric repeat amplification protocol assay (trap assay) is a standard established technique to detect the activity (expression) of telomerase in the cancerous samples. it includes a time-consuming procedure that has significant drawbacks such as high cost, complicacy, time-consuming procedure, equipment-dependent steps and false-positive signals caused by inclusion of pcr insid...

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