Results 131 to 140 of about 5,461,980 (349)

In vivo evidence for glycyl radical insertion into a catalytically inactive variant of pyruvate formate‐lyase

open access: yesFEBS Letters, EarlyView.
Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel   +2 more
wiley   +1 more source

Neural Image Analysis and Electron Microscopy to Detect and Describe Selected Quality Factors of Fruit and Vegetable Spray-Dried Powders—Case Study: Chokeberry Powder

open access: yesSensors, 2019
The study concentrates on researching possibilities of using computer image analysis and neural modeling in order to assess selected quality discriminants of spray-dried chokeberry powder.
Krzysztof Przybył   +6 more
doaj   +1 more source

The Chirality Of Life: From Phase Transitions To Astrobiology [PDF]

open access: yesarXiv, 2008
The search for life elsewhere in the universe is a pivotal question in modern science. However, to address whether life is common in the universe we must first understand the likelihood of abiogenesis by studying the origin of life on Earth. A key missing piece is the origin of biomolecular homochirality: permeating almost every life-form on Earth is ...
arxiv  

Publications of the exobiology program for 1981: A special bibliography [PDF]

open access: yes
The exobiology program investigates the planetary events which were responsible for, or, related to, the origin, evolution, and distribution of life in the universe.
Devincenzi, D. L., Pleasant, L. G.
core   +1 more source

Origin of Quantum Mechanical Results and Life: A Clue from Quantum Biology [PDF]

open access: yes, 2018
Although quantum mechanics can accurately predict the probability distribution of outcomes in an ensemble of identical systems, it cannot predict the result of an individual system.
Dikshit, Biswaranjan
core  

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

Supplementation of beer with Pinus sylvestris L. shoots extracts and its effect on fermentation, phenolic content, antioxidant activity and sensory profiles

open access: yesElectronic Journal of Biotechnology, 2023
Background: The aim of this study was to determine the role of Pinus sylvestris L. shoots in the development of antioxidant and sensory features of wheat beer.
Marcin Dziedziński   +6 more
doaj  

The origin and early evolution of life in chemical complexity space [PDF]

open access: yesarXiv, 2018
Life can be viewed as a localized chemical system that sits on, or in the basin of attraction of, a metastable dynamical attractor state that remains out of equilibrium with the environment. Such a view of life allows that new living states can arise through chance changes in local chemical concentration (=mutations) that move points in space into the ...
arxiv  

Flow‐based immunomagnetic enrichment of circulating tumor cells from diagnostic leukapheresis product

open access: yesMolecular Oncology, EarlyView.
The number of circulating tumor cells obtained from prostate cancer patients was increased approximately 5‐fold compared to regular CellSearch when processing 2 mL diagnostic leukapheresis material aliquots and increased by 44‐fold when processing 20 mL DLA aliquots using the flow enrichment target capture Halbach‐array.
Michiel Stevens   +8 more
wiley   +1 more source

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