An investigation into the energy transfer efficiency of a two-pigment photosynthetic system using a macroscopic quantum model [PDF]
arXiv, 2020 Despite several different measures of efficiency that are applicable to the photosynthetic systems, a precise degree of efficiency of these systems is not completely determined. Introducing an efficient model for the dynamics of light-harvesting complexes in biological environments is a major purpose in investigating such systems.
arxiv
Excitons in a Photosynthetic Light-Harvesting System: A Combined Molecular Dynamics/Quantum Chemistry and Polaron Model Study [PDF]
, 2001 The dynamics of pigment-pigment and pigment-protein interactions in light-harvesting complexes is studied with a novel approach which combines molecular dynamics (MD) simulations with quantum chemistry (QC) calculations. The MD simulations of an LH-II complex, solvated and embedded in a lipid bilayer at physiological conditions (with total system size ...
arxiv +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.
+30 more
core +1 more source
Eggshell pigment composition covaries with phylogeny but not with life history or with nesting ecology traits of British passerines [PDF]
, 2015 No single hypothesis is likely to explain the diversity in eggshell coloration and patterning across birds, suggesting that eggshell appearance is most likely to have evolved to fulfill many nonexclusive functions.
Brulez, Kaat +9 more
core +6 more sources
Advanced Healthcare Materials, EarlyView.Deinococcus radiodurans‐derived extracellular vesicles (R1‐EVs) provide radioprotection against total‐body irradiation‐induced acute radiation syndrome in mice. R1‐EVs mitigate oxidative damage by scavenging free radicals, promoting intestinal repair, enhancing hematopoietic function, and modulating immune responses. This study highlights the potential
Jeong Moo Han +7 more
wiley +1 more source
Constrained geometric dynamics of the Fenna-Matthews-Olson complex: The role of correlated motion in reducing uncertainty in excitation energy transfer [PDF]
Fokas, A.S. and Cole, D.J. and Chin A.W. Photosynth. Res., 2014,
Online, 2014 The Fenna Mathews Olson (FMO) complex of green sulphur bacteria is an example of a photosynthetic pigment protein complex, in which the electronic properties of the pigments are modified by the protein environment to promote efficient excitonic energy transfer from antenna complexes to the reaction centres.
arxiv +1 more source
Qualification and quantification of cyanobacterial biochromes from the Gulf of Mannar in Tamil Nadu, India [PDF]
Marine cyanobacteria are a class of extinct photosynthetic bacteria that go back 3.5 million years. The most precious marine microorganisms are produced for various pigment extraction.
Ramachandran, M +2 more
core +2 more sources
Evolution of the eyes of vipers with and without infrared-sensing pit organs [PDF]
, 2019 We examined lens and brille transmittance, photoreceptors, visual pigments, and visual opsin gene sequences of viperid snakes with and without infrared-sensing pit organs. Ocular media transmittance is high in both groups.
Douglas, R. H. +12 more
core +3 more sources
Imine Crosslinked, Injectable, and Self‐Healing Fucoidan Hydrogel with Immunomodulatory Properties
Advanced Healthcare Materials, EarlyView.This study develops an injectable fucoidan‐based hydrogel with tunable properties for tissue engineering. By oxidizing fucoidan (OFu) to introduce aldehydes, imine crosslinks are formed with amine‐containing polymers, enabling self‐healing, injectability, and long‐term stability (≥28 days). The OFu‐gelatin hydrogel demonstrated biocompatibility, immune‐
Asma Talib Qureshi +3 more
wiley +1 more source
A Transcriptomic Approach to the Metabolism of Tetrapyrrolic Photosensitizers in a Marine Annelid
Molecules, 2021 The past decade has seen growing interest in marine natural pigments for biotechnological applications. One of the most abundant classes of biological pigments is the tetrapyrroles, which are prized targets due their photodynamic properties; porphyrins ...
Maria Leonor Santos +4 more
doaj +1 more source