Results 71 to 80 of about 167,754 (305)

Cyanobacterial UV Pigments Evolved to Optimize Photon Dissipation Rather than Photoprotection

Biophysica
An ancient repertoire of ultraviolet (UV)-absorbing pigments which survive today in the phylogenetically oldest extant photosynthetic organisms, the cyanobacteria, point to a direction in evolutionary adaptation of the pigments and their associated biota;
Aleksandar Simeonov, Karo Michaelian
doaj   +1 more source

Phytohormone-mediated interkingdom signaling shapes the outcome of rice-Xanthomonas oryzae pv. oryzae interactions [PDF]

, 2015
Background: Small-molecule hormones are well known to play key roles in the plant immune signaling network that is activated upon pathogen perception. In contrast, little is known about whether phytohormones also directly influence microbial virulence ...
De Vleesschauwer, David, He, Ya-Wen, Höfte, Monica, Kojima, Mikiko, Sakakibari, Hitoshi, Venturi, Vittorio, Xu, Jing, Zhou, Lian   +7 more
core   +2 more sources

Structure Formation in Butterfly Scales: Interplay of Genetic Control, Mechanical Instabilities, and Dynamic Material Properties

Advanced Functional Materials, EarlyView.
Butterfly wing scales are intricate cuticular functional nanosctructures. This perspective suggests that spatially varying material properties, cytoskeletal constraints, and growth‐driven mechanical instabilities shape the resulting nanoscale architectures created from single cells.
Anupama Prakash, Victoria Lloyd, Yi Yang, Anna‐Lee Jessop, Anthony McDougal, Primož Pirih, Guillaume Duclos, Andrew Parnell, Mathias Kolle, Nicola J. Nadeau, Bodo D. Wilts   +10 more
wiley   +1 more source

Quantum Mechanical Aspects of Cell Microtubules: Science Fiction or Realistic Possibility?

, 2010
Recent experimental research with marine algae points towards quantum entanglement at ambient temperature, with correlations between essential biological units separated by distances as long as 20 Angstr\"oms.
, , , , , , Bernardot F, Böhm K, Collini E, Davydov A S, Dustin P, Engleborghs Y, Ginzburg V L, Hameroff S, Hameroff S, Hameroff S, Hameroff S, Haroche S, Leggett A, Löwe J, Mershin A, Mershin A, Nick E Mavromatos, Onnes H K, Penrose R, Popp F A, Sackett D L, Schrödinger E, see: Swain J, Tuszynski J A, Wells D B   +30 more
core   +1 more source

The retina visual cycle is driven by cis retinol oxidation in the outer segments of cones [PDF]

, 2017
Vertebrate rod and cone photoreceptors require continuous supply of chromophore for regenerating their visual pigments after photoactivation. Cones, which mediate our daytime vision, demand a particularly rapid supply of 11-cis retinal chromophore in ...
Cornwall, M. Carter, Frederiksen, Rikard, Kefalov, Vladimir J, Sato, Shinya   +3 more
core   +2 more sources

Metachromatic Butterfly Bile Pigments for Multi‐Level Optical Security Films

Advanced Functional Materials, EarlyView.
Bio‐derived optical security materials are manufactured by embedding butterfly‐based pigments in polymer films. Tunable color and fluorescence responses arise from concentration‐controlled metachromasy, enabling spatially encoded patterns with distinct visible, UV‐active, and spectral signatures.
Limin Wang, Bodo D. Wilts
wiley   +1 more source

An Edible H2O2 Biosensor for Gastrointestinal Metabolites and Peroxidase Enzyme Quantification

Advanced Healthcare Materials, EarlyView.
We present an edible biosensor for gastric fluid analysis that integrates a caffeic acid–horseradish peroxidase redox system into an edible electrolyte‐gated transistor. The device enables rapid, low‐volume detection of H2O2 and, with minimal modification, metabolites and enzyme activity in simulated gastrointestinal conditions.
Valerio Francesco Annese, Elena Feltri, Pietro Rossi, Valerio Galli, Cristiano Bortolotti, João Paulo Vita Damasceno, Ivan K. Ilic, Dario Natali, Alessandro Luzio, Adrica Kyndiah, Mario Caironi   +10 more
wiley   +1 more source

Biotechnological production of natural pigments for textile dyeing

Frontiers in Microbiology
Global markets, including the pigments sector, have been significantly influenced by the adoption of novel circular bioeconomy policies and increasing concerns about sustainable practices.
Bruna Basto, Nuno R. da Silva, Nuno R. da Silva, José A. Teixeira, José A. Teixeira, Sara C. Silvério, Sara C. Silvério   +6 more
doaj   +1 more source

Biological activities and chemical composition of methanolic extracts of selected Autochthonous microalgae strains from the Red Sea [PDF]

, 2015
Four lipid-rich microalgal species from the Red Sea belonging to three different genera (Nannochloris, Picochlorum and Desmochloris), previously isolated as novel biodiesel feedstocks, were bioprospected for high-value, bioactive molecules.
Carolina Bruno De Sousa, Florêncio Nogueira, Fouzi Mouffouk, Hugo Pereira, José Manuel, João Varela, Khalid M. Abu-salah, Luísa Barreira, Luísa Custódio, Maria João Rodrigues, Marta Oliveira, Nuno Da Rosa Neng, Radhouan Ben-hamadou, Salman A. Alrokayan, The Red Sea   +14 more
core   +4 more sources

Aptamer‐Based Delivery Systems for VEGF and NGF Modulation in Ocular Therapies

Advanced Healthcare Materials, EarlyView.
Aptamer‐based delivery systems targeting NGF and VEGF hold significant potential for precise and sustained treatment of complex diseases affecting both the anterior and posterior segments of the eye. This review critically summarizes current strategies for NGF and VEGF delivery as well as VEGF sequestration, providing a clinical perspective on how ...
Nadine Best, Gizem Karabiyik, Gerd Geerling, Sarah Barbara Zwingelberg, Gregor Lang, Martin Humenik   +5 more
wiley   +1 more source