نتایج جستجو برای: magnesium ion

تعداد نتایج: 240155  

Journal: :Physiological genomics 2005
Angela Goytain Gary A Quamme

We have begun to identify and characterize genes that are differentially expressed with low magnesium. One of these sequences conformed to the solute carrier SLC41A1. Real-time RT-PCR of RNA isolated from renal distal tubule epithelial [mouse distal convoluted tubule (MDCT)] cells cultured in low-magnesium media relative to normal media and in the kidney cortex of mice maintained on low-magnesi...

Journal: :Biochemistry 2008
Richard Owczarzy Bernardo G Moreira Yong You Mark A Behlke Joseph A Walder

Accurate predictions of DNA stability in physiological and enzyme buffers are important for the design of many biological and biochemical assays. We therefore investigated the effects of magnesium, potassium, sodium, Tris ions, and deoxynucleoside triphosphates on melting profiles of duplex DNA oligomers and collected large melting data sets. An empirical correction function was developed that ...

2011
Edreese H. Alsharaeh

In this work we investigated the intracluster ion molecule reactions following the generation of Mg(+) within the polar clusters (water, methanol, ether and acetonitrile), using time of flight mass spectrometry. In the case of Mg(+)/water and Mg(+)/methanol, dehydrogenation reactions are observed after the addition of five molecules. However, no dehydrogenation reactions are observed in the cas...

Journal: :The Journal of biological chemistry 2015
Jana Kopečná Israel Cabeza de Vaca Nathan B P Adams Paul A Davison Amanda A Brindley C Neil Hunter Victor Guallar Roman Sobotka

In oxygenic phototrophs, chlorophylls, hemes, and bilins are synthesized by a common branched pathway. Given the phototoxic nature of tetrapyrroles, this pathway must be tightly regulated, and an important regulatory role is attributed to magnesium chelatase enzyme at the branching between the heme and chlorophyll pathway. Gun4 is a porphyrin-binding protein known to stimulate in vitro the magn...

2014
Yongseok Jang Daniel Owuor Jenora T. Waterman Leon White Boyce Collins Jagannathan Sankar Thomas W. Gilbert Yeoheung Yun

The biodegradable ability of magnesium alloys is an attractive feature for tracheal stents since they can be absorbed by the body through gradual degradation after healing of the airway structure, which can reduce the risk of inflammation caused by long-term implantation and prevent the repetitive surgery for removal of existing stent. In this study, the effects of bicarbonate ion (HCO₃-) and m...

Journal: :Batteries & supercaps 2023

A good understanding of the limiting processes in rechargeable magnesium batteries is key to develop novel high-capacity/high-voltage cathode materials. Thereby, performance magnesium-ion can strongly depend on morphology intercalation cathode. Moreover, high mass loadings are essential for commercialization. In this work influence different studied addition impact particle size distribution ac...

2014
Kate A. Stafford Arthur G. Palmer III Gaetano Montelione Kate Stafford Rafael Najmanovich

Ribonuclease H1 (RNase H) enzymes are well-conserved endonucleases that are present in all domains of life and are particularly important in the life cycle of retroviruses as domains within reverse transcriptase. Despite extensive study, especially of the E. coli homolog, the interaction of the highly negatively charged active site with catalytically required magnesium ions remains poorly under...

Journal: :Clinical chemistry 1993
R Eugster B Rusterholz A Schmid U E Spichiger W Simon

A magnesium ion-selective liquid membrane electrode based on a synthetic neutral carrier is presented. The selectivity for Mg2+ over Na+, K+, and H+ is sufficient for assays in the physiological range, but a chemometric correction of approximately 10% is still necessary for the Ca2+ interference. We optimized the membrane composition especially with respect to selectivity and accuracy by perfor...

Journal: :Journal of Physics B: Atomic, Molecular and Optical Physics 2009

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