Results 41 to 50 of about 397,718 (300)

Infrared Spectral Signatures of Nucleobases in Interstellar Ices I: Purines

Life, 2023
The purine nucleobases adenine and guanine are complex organic molecules that are essential for life. Despite their ubiquitous presence on Earth, purines have yet to be detected in observations of astronomical environments.
Caroline Antunes Rosa, Alexandre Bergantini, Péter Herczku, Duncan V. Mifsud, Gergő Lakatos, Sándor T. S. Kovács, Béla Sulik, Zoltán Juhász, Sergio Ioppolo, Heidy M. Quitián-Lara, Nigel J. Mason, Claudia Lage   +11 more
doaj   +1 more source

Dual-tip-enhanced ultrafast CARS nanoscopy [PDF]

, 2013
Coherent anti-Stokes Raman scattering (CARS) and, in particular, femtosecond adaptive spectroscopic techniques (FAST CARS) have been successfully used for molecular spectroscopy and microscopic imaging.
, Aeschlimann M, Agio M, Alexander M Sinyukov, Alexei V Sokolov, Biagioni P, Bin Cao, Charles W Ballmann, Dmitri V Voronine, Mukamel S, Palik E D, Potma E O, Rice S A, Ru E C L, Schluecker S, Shapiro M   +15 more
core   +3 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

RETRACTED: Adenine Combined with Cisplatin Promotes Anticancer Activity against Hepatocellular Cancer Cells through AMPK-Mediated p53/p21 and p38 MAPK Cascades

Pharmaceuticals, 2022
Cisplatin has been widely used in cancer treatments. Recent evidence indicates that adenine has potential anticancer activities against various types of cancers. However, the effects of the combination of adenine and cisplatin on hepatocellular carcinoma
Jhen-Yu Huang, You-Cian Lin, Han-Min Chen, Jiun-Tsai Lin, Shao-Hsuan Kao   +4 more
doaj   +1 more source

Metal-ion binding and metal-ion induced folding of the adenine-sensing riboswitch aptamer domain [PDF]

, 2010
Divalent cations are important in the folding and stabilization of complex RNA structures. The adenine-sensing riboswitch controls the expression of mRNAs for proteins involved in purine metabolism by directly sensing intracellular adenine levels ...
Noeske, Jonas, Schwalbe, Harald (Prof. Dr.), Wöhnert, Jens   +2 more
core  

The pyruvate generator is a common phenomenon in mitochondria from different rat and mouse brain regions

FEBS Letters, EarlyView.
The pyruvate generator, which causes activation of respiration by extra‐mitochondrial Ca2+, is also present and functional in rat brainstem mitochondria, as it is in other brain regions. This finding is confirmed by experiments with a fully reconstituted malate–aspartate shuttle (MAS).
Grazyna Debska‐Vielhaber, Niki Karavasili, Matthias Kunz, Zemfira Gizatullina, Timur Gainutdinov, Stefan Vielhaber, Wolfram S. Kunz, Frank N. Gellerich   +7 more
wiley   +1 more source

Surface-Enhanced Raman Spectroscopy (SERS) for Identifying Traces of Adenine in Organic-Bearing Extraterrestrial Dust Analogs Captured in the Tanpopo Aerogel after Hypervelocity Impacts

Gels
Raman spectroscopy is a non-destructive analytical technique for characterizing organic and inorganic materials with spatial resolution in the micrometer range. This makes it a method of choice for space-mission sample characterization, whether on return
Aline Percot, Farah Mahieddine, Hajime Yano, Sunao Hasegawa, Makoto Tabata, Akihiko Yamagishi, Hajime Mita, Alejandro Paredes-Arriaga, Marie-Christine Maurel, Jean-François Lambert, Donia Baklouti, Emilie-Laure Zins   +11 more
doaj   +1 more source

Mutual Relations between Substituent Effect, Hydrogen Bonding, and Aromaticity in Adenine-Uracil and Adenine-Adenine Base Pairs

Molecules, 2020
The electronic structure of substituted molecules is governed, to a significant extent, by the substituent effect (SE). In this paper, SEs in selected nucleic acid base pairs (Watson-Crick, Hoogsteen, adenine-adenine) are analyzed, with special emphasis ...
Paweł A. Wieczorkiewicz, Halina Szatylowicz, Tadeusz M. Krygowski   +2 more
doaj   +1 more source

Mechanism study on the effect of adenine on the viability of Lactiplantibacillus plantarum LIP-1 powder via freeze-drying

Food Science of Animal Products, 2023
Adenine acts as a growth promoter to promote the growth of the lactic acid bacteria (LAB), but the effect on the viability of freeze-dried strains has rarely been studied.
Qiaoling Zhang, Rongze Ma, Jinqi Cao, Ruoru Zhuang, Shuyi Jiao, Xingkun Guo, Jingjing E, Junguo Wang   +7 more
doaj   +1 more source

Purine and pyrimidine bases as growth substances for lactic acid bacteria [PDF]

, 1941
In 1936 Richardson (1) showed that uracil was essential for the anaerobic growth of Staphylococcus aureus, but not for aerobic growth of the same organism.
Mitchell, Herschel K., Snell, Esmond E.
core