Results 71 to 80 of about 776,357 (247)

New species and combinations in Parmelia (Lichenes) from southern Africa F. BRUSSE*

open access: yesBothalia: African Biodiversity & Conservation, 1984
Eight new species are described and six new combinations are made in the lichen genus Parmelia from southern Africa, The new species are Parmelia astricta Brusse, P. clivorum Brusse, P. marroninipuocta Brusse, P. patula Brusse,  P.
F. Brusse
doaj   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

New species and notes on the genus Cliffortia (Rosaceae)

open access: yesBothalia: African Biodiversity & Conservation, 2007
Seven new species of Cliffortia L. endemic to the Cape Floristic Region (CFR) are described. C. anthospermoides. C. cruciata. C. ferricola, C. gracillima. C. perpendicularis. C. sparsa and C. weimarckii.
C. M. Whitehouse, A. C. Fellingman
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

Systematics of the southern African genus Ixia (Iridaceae). 1. The I. rapunculoides complex

open access: yesBothalia: African Biodiversity & Conservation, 2008
Field and laboratory investigation of the six varieties of Ixia rapunculoides Delile (recognized in the current revisions and flora accounts of this southern African genus of some 65 species) show that a revised taxonomy better reflects the biology of ...
P. Goldblatt, J. C. Manning
doaj   +1 more source

Integration of circadian and hypoxia signaling via non‐canonical heterodimerization

open access: yesFEBS Letters, EarlyView.
CLOCK, BMAL1, and HIFs are basic helix‐loop‐helix and Per‐Arnt‐Sim domain (bHLH‐PAS) proteins, which function as transcription factors. bHLH‐PAS proteins are designated in two classes. Many class I proteins are regulated by environmental signals via their PAS domains, but such signals have not been identified for all.
Sicong Wang, Katja A. Lamia
wiley   +1 more source

A new species of the weevil genus Melanobaris Alonso-Zarazaga et Lyal, 1999 (Coleoptera: Curculionidae: Baridinae) from Mt. Hermon in Israel and commentaries on the composition of the genera Melanobaris and Aulacobaris Desbrochers, 1892 [PDF]

open access: yesКавказский энтомологический бюллетень, 2011
A new species of the weevil genus Melanobaris Alonso-Zarazaga et Lyal, 1999 is described from Israel (Mt. Hermon). Melanobaris margaritae sp. n. is similar to M.
B.A. Korotyaev, A.L.L. Friedman
doaj  

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

ON THE FAUNA OF PTEROPHORIDAE (LEPIDOPTERA, PTEROPHORIDAE HÜBNER) OF SWAZILAND

open access: yesАмурский зоологический журнал, 2012
The data on the fauna of Pterophoridae of Swaziland is presented for the first time. 32 Pterophoridae species (26 from which are unknown in the country) are reported.
V. N. Kovtunovich, P. Ja. Ustjuzhanin
doaj  

Pepila Weise: Taxonomic identity of the genus and revision of the megalopoides species-group, and description of two new species from Australia (Coleoptera: Chrysomelidae: Alticinae)

open access: yesEuropean Journal of Entomology, 2003
In this paper some taxonomic observations on the Australian flea beetle genus Pepila Weise, 1923 are reported. The following species are transferred to the genus Pepila and lectotypes for them designated: Chaetocnema carinata Baly, 1877; Plectroscelis ...
Maurizio BIONDI, Paola D'ALESSANDRO
doaj   +1 more source

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