Results 141 to 150 of about 10,860,643 (378)

The nicotinamide hypothesis revisited—plant defense signaling integrating PARP, nicotinamide, nicotinic acid, epigenetics, and glutathione

FEBS Letters, EarlyView.
Nicotinamide (NIC) and nicotinic acid (NIA) are proposed as stress signaling compounds in plants. Oxidative stress may lead to single strand breaks (SSB) in DNA, which activate poly(ADP‐ribose) polymerase (PARP). NIC and NIA are then formed from NAD. NIC and NIA can promote epigenetic changes leading to the expression of defense genes specific for the ...
Torkel Berglund, Anna B. Ohlsson
wiley   +1 more source

Computer vision enables taxon-specific identification of African carnivore tooth marks on bone

Scientific Reports
Taphonomic works aim at discovering how paleontological and archaeofaunal assemblages were formed. They also aim at determining how hominin fossils were preserved or destroyed.
Manuel Domínguez-Rodrigo, Marcos Pizarro-Monzo, Gabriel Cifuentes-Alcobendas, Marina Vegara-Riquelme, Blanca Jiménez-García, Enrique Baquedano   +5 more
doaj   +1 more source

Elusive data underlying debate at the prokaryote-eukaryote divide

Biology Direct, 2018
Background The origin of eukaryotic cells was an important transition in evolution. The factors underlying the origin and evolutionary success of the eukaryote lineage are still discussed.
Marie Gerlitz, Michael Knopp, Nils Kapust, Joana C. Xavier, William F. Martin   +4 more
doaj   +1 more source

The Evolution of Obstetric Analgesia [PDF]

, 1940
A. M. Claye, W. Sykes
openalex   +1 more source

The evolution of SARS-CoV-2

Nature Reviews Microbiology, 2023
P. V. Markov, M. Ghafari, M. Beer, K. Lythgoe, P. Simmonds, N. Stilianakis, A. Katzourakis   +6 more
semanticscholar   +1 more source

Representation, evolution and embodiment [PDF]

, 2005
As part of the ongoing attempt to fully naturalize the concept of human being--and, more specifically, to re-center it around the notion of agency--this essay discusses an approach to defining the content of representations in terms ultimately derived ...
Anderson, Dr. Michael L.
core   +1 more source

Thermalization through parton transport

, 2009
A radiative transport model is used to study kinetic equilibration during the early stage of a relativistic heavy ion collision. The parton system is found to be able to overcome expansion and move toward thermalization via parton collisions.
Bin Zhang, El, Huovinen, Xu, Zhang, Zhang, Zhang   +6 more
core   +1 more source

Single cis‐elements in brassinosteroid‐induced upregulated genes are insufficient to recruit both redox states of the BIL1/BZR1 DNA‐binding domain

FEBS Letters, EarlyView.
Phytohormone brassinosteroid‐induced gene regulation by the transcription factor BIL1/BZR1 involves redox‐dependent DNA‐binding alternation and interaction with the transcription factor PIF4. The reduced BIL1/BZR1 dimer binds preferred cis‐elements, while oxidation alters its oligomerization state and disrupts DNA‐binding ability.
Shohei Nosaki, Masae Ohtsuka, Takeshi Nakano, Masaru Tanokura, Takuya Miyakawa   +4 more
wiley   +1 more source

Cytology of Different Species of Aroids with a View to Trace the Basis of their Evolution [PDF]

, 1955
Archana Mookerjea
openalex   +1 more source

Structural dynamics of the plant hormone receptor ETR1 in a native‐like membrane environment

FEBS Letters, EarlyView.
The present study unveils the structural and signaling dynamics of ETR1, a key plant ethylene receptor. Using an optimized nanodisc system and solution NMR, we captured full‐length ETR1 in a native‐like membrane environment. Our findings reveal dynamic domain uncoupling and Cu(I)‐induced rigidification, providing the first evidence of metal‐triggered ...
Moritz Lemke, Nils Alexander Lakomek, Georg Groth   +2 more
wiley   +1 more source