Results 71 to 80 of about 929,968 (266)

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

open access: yesFEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara   +3 more
wiley   +1 more source

СТРУКТУРА И ДИНАМИКА НА ФИТОПЛАНКТОНА В ЯЗОВИР „КЪРДЖАЛИ“

open access: yesЖивотновъдни науки, 2014
Subject of study were the species composition and seasonal dynamics of phytoplankton in “Kardzhali” damlake. The presence of 67 taxa of 7 divisions was established: Cyanoprokaryota (12), Chlorophyta (21), Streptophyta (7), Pyrrhophyta (2), Euglenophyta (
КОСТАДИН ДОЧИН
doaj  

Temporal variation in the abundance and composition of phytoplankton species, collected with net in the Acapulco Bay, Mexico

open access: yesRevista Bio Ciencias, 2015
Phytoplankton community species were collected from September 2009 to April 2010 in Acapulco Bay, Mexico, in order to determine their composition and abundance. Samples were collected in two stations within the Bay.
Moreno-Díaz, G.   +5 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Periodic and quasiperiodic control processes in the biocommunity species composition preserving problem

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The dynamical model describing several stages of interaction between populations of predators and preys in some area is proposed. The transition from one stage to another is determined by the values of the function which has the sense of trophical ...
Alexandra Ivanova, Alexander Kirillov
doaj   +1 more source

α‐Synuclein aggregation landscape from phase separation to neurotoxic intermediates

open access: yesFEBS Letters, EarlyView.
Alpha‐synuclein aggregation in Parkinson's disease involves a complex landscape of transient intermediates, including oligomers, fibrils and liquid–liquid phase separation (LLPS). A view is emerging in which LLPS maturation into solid‐like condensates may contribute to the formation of neurotoxic species.
Silvia Arino   +2 more
wiley   +1 more source

Metazoan Microzooplankton in the Crimean Coastal Waters of the Black and Azov Seas in Spring: Composition, Abundance and Spatial Distribution [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2019
The study was carried out during the 84th expedition of RV “Professor Vodyanitsky” in the coastal waters of the Black and Azov Seas from 19 to 26 April 2016.
Sergey A. Seregin, Elena V. Popova
doaj  

Orchid bee fauna responds to habitat complexity on a savanna area (Cerrado) in Brazil.

open access: yesSociobiology, 2016
Habitat structure and complexity may broadly affect the diversity and composition of a variety of fauna in terrestrial systems. Here we investigated responses of orchid bee assemblages to habitat complexity, with the aim of assessing complexity as a ...
Yasmine Antonini   +4 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Influence of River Valleys on Genetic Diversity and Species Distribution Patterns of Cyprididae (Crustacea: Ostracoda) on the Tibetan Plateau

open access: yesEcology and Evolution
River valleys are recognized as significant ecological barriers that impact gene flow between species adapted to distinct habitat types. The Tibetan Plateau, with its diverse habitats intersected by numerous river valleys, serves as a focal point for ...
Qing Hu   +6 more
doaj   +1 more source

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