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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
36 Citations
11,085 Views
10 Pages

Structural Dynamics of DPP-4 and Its Influence on the Projection of Bioactive Ligands

  • Simone Queiroz Pantaleão,
  • Eric Allison Philot,
  • Pedro Túlio De Resende-Lara,
  • Angélica Nakagawa Lima,
  • David Perahia,
  • Maria Atanassova Miteva,
  • Ana Ligia Scott and
  • Kathia Maria Honorio

23 February 2018

Dipeptidyl peptidase-4 (DPP-4) is a target to treat type II diabetes mellitus. Therefore, it is important to understand the structural aspects of this enzyme and its interaction with drug candidates. This study involved molecular dynamics simulations...

  • Article
  • Open Access
8 Citations
4,974 Views
11 Pages

Triterpenoid Saponins from Anemone rivularis var. Flore-Minore and Their Anti-Proliferative Activity on HSC-T6 Cells

  • Xiao-Yang Wang,
  • Hui Gao,
  • Xiao-Jie Xie,
  • Jirimubatu Jurhiin,
  • Mu-Zi-He Zhang,
  • Yan-Ping Zhou,
  • Rui Liu,
  • Meng Ning,
  • Jin Han and
  • Hai-Feng Tang

23 February 2018

Five previously undescribed triterpenoid saponins (1–5), along with eight known ones (6–13), were isolated from the whole plants of Anemone rivularis var. flore-minore. Their structures were clarified by extensive spectroscopic data and chemical evid...

  • Feature Paper
  • Review
  • Open Access
58 Citations
11,531 Views
18 Pages

Enantiomeric Mixtures in Natural Product Chemistry: Separation and Absolute Configuration Assignment

  • Andrea N. L. Batista,
  • Fernando M. dos Santos,
  • João M. Batista and
  • Quezia B. Cass

23 February 2018

Chiral natural product molecules are generally assumed to be biosynthesized in an enantiomerically pure or enriched fashion. Nevertheless, a significant amount of racemates or enantiomerically enriched mixtures has been reported from natural sources....

  • Review
  • Open Access
52 Citations
7,523 Views
19 Pages

Natural Alkaloids and Heterocycles as G-Quadruplex Ligands and Potential Anticancer Agents

  • Tong Che,
  • Yu-Qing Wang,
  • Zhou-Li Huang,
  • Jia-Heng Tan,
  • Zhi-Shu Huang and
  • Shuo-Bin Chen

23 February 2018

G-quadruplexes are four-stranded nucleic acid secondary structures that are formed in guanine-rich sequences. G-quadruplexes are widely distributed in functional regions of the human genome and transcriptome, such as human telomeres, oncogene promote...

  • Article
  • Open Access
29 Citations
6,050 Views
16 Pages

23 February 2018

l-Phosphinothricin (glufosinate or 2-amino-4-((hydroxy(methyl) phosphinyl) butyric acid ammonium salt (AHPB)), which is a structural analog of glutamate, is a recognized herbicide that acts on weeds through inhibition of glutamine synthetase. Due to...

  • Article
  • Open Access
31 Citations
8,925 Views
13 Pages

23 February 2018

β-carotene is a lipophilic micronutrient that is considered beneficial to human health. However, there are some limitations in utilizing β-carotene in functional foods or dietary supplements currently because of its poor water dispersibility and chem...

  • Article
  • Open Access
31 Citations
5,994 Views
13 Pages

Antioxidation and Cytoprotection of Acteoside and Its Derivatives: Comparison and Mechanistic Chemistry

  • Xican Li,
  • Yulu Xie,
  • Ke Li,
  • Aizhi Wu,
  • Hong Xie,
  • Qian Guo,
  • Penghui Xue,
  • Yerkingul Maleshibek,
  • Wei Zhao and
  • Jiasong Guo
  • + 1 author

23 February 2018

The study tried to explore the role of sugar-residues and mechanisms of phenolic phenylpropanoid antioxidants. Acteoside, along with its apioside forsythoside B and rhamnoside poliumoside, were comparatively investigated using various antioxidant ass...

  • Article
  • Open Access
18 Citations
5,722 Views
14 Pages

23 February 2018

BF-30 is a single chain polypeptide of an N-segment with an α-helix from cathelicidin gene encoding, and it contains 30 amino acid residues, with a relative molecular mass and isoelectric point of 3637.54 and 11.79, respectively. Cathelicidin-BF-30 w...

  • Article
  • Open Access
22 Citations
5,504 Views
14 Pages

Melatonin-Mediated Development of Ovine Cumulus Cells, Perhaps by Regulation of DNA Methylation

  • Yi Fang,
  • Shoulong Deng,
  • Jinlong Zhang,
  • Haijun Liu,
  • Yihai Li,
  • Xiaosheng Zhang and
  • Yixun Liu

23 February 2018

Cumulus cells of pre-pubertal domestic animals are dysfunctional, perhaps due to age-specific epigenetic events. This study was designed to determine effects of melatonin treatment of donors on methylation modification of pre-pubertal cumulus cells....

  • Article
  • Open Access
14 Citations
6,135 Views
18 Pages

Establishment of the Volatile Signature of Wine-Based Aromatic Vinegars Subjected to Maceration

  • Rosa Perestrelo,
  • Catarina L. Silva,
  • Pedro Silva and
  • José S. Câmara

23 February 2018

The flavoring of vinegars with aromatic fruits and medicinal herbs is a practice with increasing trend mostly in countries with oenological tradition, resulting in a product of improved quality and consumer attractiveness. This study was directed tow...

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Molecules - ISSN 1420-3049