Results 21 to 30 of about 9,212 (204)

Conservation status of newly discovered subpopulations of two globally threatened tree species in the East Usambara Mountains, Tanzania

open access: yesOryx
Two globally threatened tree species, the Critically Endangered Cola porphyrantha (Malvaceae) and the Endangered Gigasiphon macrosiphon (Fabaceae) are narrowly distributed in Kenya and Tanzania. In Tanzania, both species were first located in an isolated,
Henry J. Ndangalasi, Norbert J. Cordeiro
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

open access: yesFEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai   +9 more
wiley   +1 more source

AN ANNOTATED SPECIES LIST OF PARASITES FOUND IN EUROPEAN SMELT OSMERUS EPERLANUS (L.)

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2017
This paper offers a summary of the data on parasites of European smelt based on own collections and materials published in journal reviews, scientific papers, conference proceedings and theses. The system of parasitic organisms published in Catalogues of
Larisa Anikieva, Evgeny Ieshko
doaj   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

open access: yesFEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai   +4 more
wiley   +1 more source

The Timor green pigeon Treron psittaceus of eastern Indonesia and Timor-Leste may be on the verge of extinction

open access: yesOryx
The Timor green pigeon Treron psittaceus, endemic to Timor, Rote, and adjacent satellite islands (eastern Indonesia and Timor-Leste), is declining because of severe hunting pressure and forest conversion. During 2002–2025, we conducted > 1,400 field days
Colin R. Trainor   +4 more
doaj   +1 more source

TO THE FAUNA OF THE ICHNEUMONINAE (HYMENOPTERA, ICHNEUMONIDAE) OF NORTHWESTERN RUSSIA

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
In this faunistic survey, findings of 108 Ichneumoninae species, excluding tribe Phaeogenini, are reported from different areas of the North-Western Russia, namely Republic Karelia, Murmansk and Arkhangelsk Provinces.
Matthias Riedel, Andrei Humala
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

New records of Rhaphium (Dolichopodidae, Diptera) from Russian Protected Areas

open access: yesNature Conservation Research: Заповедная наука, 2020
The present study is based on examination of the collection funds of the Zoological Institute of RAS and the Department of Ecology and Systematics of Invertebrates of Voronezh State University.
Olga O. Maslova   +2 more
doaj   +1 more source

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