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Molecules, Volume 23, Issue 2

February 2018 - 290 articles

Cover Story: Biocatalysts able to convert nitroaromatics to aromatic amines are in high demand, yet they are not commonly found in nature and only succeed for a small number of known substrates. The question therefore is “Why”? We show that substrates with large pi systems-bearing electron withdrawing groups, are more likely to form amines. Crucially, nitroreductases accommodate many such substrates. We attribute this to their intertwined architecture that supports very diverse active site shapes and sizes. This segregation of core structure vs. catalytic site, eminently suits the engineering of nitroreductases. View this paper
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Articles (290)

  • Article
  • Open Access
39 Citations
5,847 Views
16 Pages

Graphene Oxide as a Nanocarrier for a Theranostics Delivery System of Protocatechuic Acid and Gadolinium/Gold Nanoparticles

  • Muhammad Sani Usman,
  • Mohd Zobir Hussein,
  • Aminu Umar Kura,
  • Sharida Fakurazi,
  • Mas Jaffri Masarudin and
  • Fathinul Fikri Ahmad Saad

24 February 2018

We have synthesized a graphene oxide (GO)-based theranostic nanodelivery system (GOTS) for magnetic resonance imaging (MRI) using naturally occurring protocatechuic acid (PA) as an anticancer agent and gadolinium (III) nitrate hexahydrate (Gd) as the...

  • Article
  • Open Access
16 Citations
6,967 Views
24 Pages

Kinetics and Optimization of Lipophilic Kojic Acid Derivative Synthesis in Polar Aprotic Solvent Using Lipozyme RMIM and Its Rheological Study

  • Nurazwa Ishak,
  • Ahmad Firdaus B. Lajis,
  • Rosfarizan Mohamad,
  • Arbakariya B. Ariff,
  • Mohd Shamzi Mohamed,
  • Murni Halim and
  • Helmi Wasoh

24 February 2018

The synthesis of kojic acid derivative (KAD) from kojic and palmitic acid (C16:0) in the presence of immobilized lipase from Rhizomucor miehei (commercially known as Lipozyme RMIM), was studied using a shake flask system. Kojic acid is a polyfunction...

  • Article
  • Open Access
9 Citations
5,959 Views
9 Pages

Pilot Study of 64CuCl2 for PET Imaging of Inflammation

  • Lei Jiang,
  • Dongli Song,
  • Hao Chen,
  • Ao Zhang,
  • Huoqiang Wang and
  • Zhen Cheng

24 February 2018

Copper(II) ion (Cu2+) is the essential element for numerous pathophysiological processes in vivo. Copper transporter 1 (CTR1) is mainly responsible for maintaining Cu2+ accumulation in cells, which has been found to be over-expressed in inflammatory...

  • Communication
  • Open Access
28 Citations
7,663 Views
12 Pages

24 February 2018

One of the main challenges of using recombinant enzymes is that they are derived from genetically-modified microorganisms commonly located in the intracellular region. The use of these recombinant enzymes for commercial purposes requires the addition...

  • Article
  • Open Access
29 Citations
5,613 Views
11 Pages

Discovery of Flavonoids from Scutellaria baicalensis with Inhibitory Activity Against PCSK 9 Expression: Isolation, Synthesis and Their Biological Evaluation

  • Piseth Nhoek,
  • Hee-Sung Chae,
  • Jagadeesh Nagarajappa Masagalli,
  • Karabasappa Mailar,
  • Pisey Pel,
  • Young-Mi Kim,
  • Won Jun Choi and
  • Young-Won Chin

24 February 2018

Nine flavonoids were isolated and identified from a chloroform-soluble fraction of the roots of Scutellaria baicalensis through a bioactivity-guided fractionation using a proprotein convertase subtilisin/kexin type 9 (PCSK9) monitoring assay in HepG2...

  • Article
  • Open Access
14 Citations
5,796 Views
10 Pages

24 February 2018

An offline two-dimensional recycling high-speed countercurrent chromatography (2D R-HSCCC) strategy with extrusion mode was developed for isolating polyphenols from the rhizome of Smilax glabra. Firstly, the ethyl acetate extract was divided into two...

  • Article
  • Open Access
24 Citations
8,075 Views
14 Pages

Triterpene Acids from Frankincense and Semi-Synthetic Derivatives That Inhibit 5-Lipoxygenase and Cathepsin G

  • Andreas Koeberle,
  • Arne Henkel,
  • Moritz Verhoff,
  • Lars Tausch,
  • Stefanie König,
  • Dagmar Fischer,
  • Nicole Kather,
  • Stefanie Seitz,
  • Michael Paul and
  • Johann Jauch
  • + 1 author

24 February 2018

Age-related diseases, such as osteoarthritis, Alzheimer’s disease, diabetes, and cardiovascular disease, are often associated with chronic unresolved inflammation. Neutrophils play central roles in this process by releasing tissue-degenerative protea...

  • Article
  • Open Access
20 Citations
6,343 Views
13 Pages

Resveratrol-Inspired Benzo[b]selenophenes Act as Anti-Oxidants in Yeast

  • Dominika Mániková,
  • Zuzana Šestáková,
  • Jana Rendeková,
  • Danuša Vlasáková,
  • Patrícia Lukáčová,
  • Edgars Paegle,
  • Pavel Arsenyan and
  • Miroslav Chovanec

24 February 2018

Resveratrol is a natural (poly)phenol primarily found in plants protecting them against pathogens, as well as harmful effects of physical and chemical agents. In higher eukaryotic cells and organisms, this compound displays a remarkable range of biol...

  • Article
  • Open Access
58 Citations
8,722 Views
17 Pages

Physicochemical Characterization and Functional Analysis of the Polysaccharide from the Edible Microalga Nostoc sphaeroides

  • Haifeng Li,
  • Linnan Su,
  • Sheng Chen,
  • Libin Zhao,
  • Hongyu Wang,
  • Fei Ding,
  • Hong Chen,
  • Ruona Shi,
  • Yulan Wang and
  • Zebo Huang

24 February 2018

Nostoc colonies have been used as food and medicine for centuries, and their main supporting matrix is polysaccharides, which help Nostoc cells resist various environmental stresses including oxidative stress. Here we isolated a polysaccharide, nosto...

  • Review
  • Open Access
324 Citations
29,254 Views
25 Pages

Mitochondria: Central Organelles for Melatonin′s Antioxidant and Anti-Aging Actions

  • Russel J. Reiter,
  • Dun Xian Tan,
  • Sergio Rosales-Corral,
  • Annia Galano,
  • Xin Jia Zhou and
  • Bing Xu

24 February 2018

Melatonin, along with its metabolites, have long been known to significantly reduce the oxidative stress burden of aging cells or cells exposed to toxins. Oxidative damage is a result of free radicals produced in cells, especially in mitochondria. Wh...

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Molecules - ISSN 1420-3049