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Article
Oil flax straw processing and utilization
Flax (Linum usitatissimum) is widely used as a source of linen oil and fiber. As a rule, the flax varieties are suitable for either seeds and oil or stem fibers production. The “fiber” varieties bring low seed, w...
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Article
Visualization of electric fields and associated behavior in fish and other aquatic animals
In some fish lineages, evolution has led to unique sensory adaptations that provide information which is not available to terrestrial animals. These sensory systems include, among others, electroreception, whi...
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Article
The role of the local environment on the structural heterogeneity of carotenoid β-ionone rings
Our analysis of the X-ray crystal structure of canthaxanthin (CAN) showed that its ketolated β-ionone rings can adopt two energetically equal, but structurally distinct puckers. Quantum chemistry calculations ...
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Article
Open AccessAuthor Correction: Magnetic field and nuclear spin influence on the DNA synthesis rate
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Article
Anti-cancer activity of ultra-short single-stranded polydeoxyribonucleotides
One of the features that differentiate cancer cells is their increased proliferation rate, which creates an opportunity for general anti-tumor therapy directed against the elevated activity of replicative appa...
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Article
Open AccessMagnetic field and nuclear spin influence on the DNA synthesis rate
The rate of a chemical reaction can be sensitive to the isotope composition of the reactants, which provides also for the sensitivity of such “spin-sensitive” reactions to the external magnetic field. Here we ...
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Article
Molecular Self-Assembly as a Trigger of Life Origin and Development
The origin and reason for the homochirality of living cells go with the problem of a relatively narrow spectrum of the actual biological monomers compared to the whole theoretically possible spectrum of amino ...
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Article
Open AccessRole of hydrogen bond alternation and charge transfer states in photoactivation of the Orange Carotenoid Protein
Here, we propose a possible photoactivation mechanism of a 35-kDa blue light-triggered photoreceptor, the Orange Carotenoid Protein (OCP), suggesting that the reaction involves the transient formation of a pro...
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Article
Open AccessOn the orientation of the chains in the mercerized cellulose
The cold alkaline treatment or mercerization of cellulose is widely used in industry to enrich the cellulose raw with high-molecular-weight $$...
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Article
Open AccessThe weak magnetic field inhibits the supramolecular self-ordering of chiral molecules
The magnetic field can affect processes in the non-magnetic systems, including the biochemical reactions in the living cells. This phenomenon becomes possible due to the fermionic nature of an electron and sig...
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Article
Friction Force Limits the Drift of Microparticles Along the Quantum Vortex in Liquid Helium
Massive enough particles of frozen hydrogen are known to be captured by quantum vortices in liquid helium. Here, we theoretically demonstrate that the drift of such particles along the vortex is limited by the...
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Article
Chirality Driven Twisting as a Driving Force of Primitive Folding in Binary Mixtures
The N-trifluoroacetylated α-aminoalcohols (TFAAAs) are able to form quasi-one-dimensional supramolecular fibers (strings) when chirally pure, and isometric precipitates in the racemate. The strings’ formation lea...
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Article
Spontaneous Resolution and Super-coiling in Xerogels of the Products of Photo-Induced Formose Reaction
This work addresses the supramolecular self-organization in the xerogels of formose reaction products. The UV-induced formose reaction was held in over-saturated formaldehyde solutions at 70∘C without a catalyst....
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Article
Unspecific histological and hematological alterations in anadromous and resident Salvelinus malma induced by volcanogenic pollution
The streams draining Kamchatkan volcanic areas are perfect natural models producing the long-lasting effects similar to inorganic anthropogenic pollution. The most abundant local fish species Salvelinus malma is ...
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Article
Coupled rows of PBS cores and PSII dimers in cyanobacteria: symmetry and structure
Phycobilisome (PBS) is a giant water-soluble photosynthetic antenna transferring the energy of absorbed light mainly to the photosystem II (PSII) in cyanobacteria. Under the low light conditions, PBSs and PSII...
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Article
Assembly of photoactive orange carotenoid protein from its domains unravels a carotenoid shuttle mechanism
The photoswitchable orange carotenoid protein (OCP) is indispensable for cyanobacterial photoprotection by quenching phycobilisome fluorescence upon photoconversion from the orange OCPO to the red OCPR form. Cyan...
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Article
Electronic coupling of the phycobilisome with the orange carotenoid protein and fluorescence quenching
Using computational modeling and known 3D structure of proteins, we arrived at a rational spatial model of the orange carotenoid protein (OCP) and phycobilisome (PBS) interaction in the non-photochemical fluor...
