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SYS-1/beta-catenin inheritance and regulation by Wnt-signaling during asymmetric cell division.
Mol Biol Cell
January 2025
Interdisciplinary Graduate Program in Genetics, University of Iowa, Iowa City, IA.
Asymmetric cell division (ACD) allows daughter cells of a polarized mother to acquire different developmental fates. In , the Wnt/β-catenin Asymmetry (WβA) pathway regulates many embryonic and larval ACDs; here, a Wnt gradient induces an asymmetric distribution of Wnt signaling components within the dividing mother cell. One terminal nuclear effector of the WβA pathway is the transcriptional activator SYS-1/β-catenin.
View Article and Find Full Text PDFEngineering Cascade Bio-solar Cells Inspired by the Z-Scheme of Oxygenic Photosynthesis: Layered Chlorophyll and Bacterio-chlorophyll Derivatives.
ChemSusChem
January 2025
Kwansei Gakuin University: Kansei Gakuin Daigaku, Department of Applied Chemistry for Environment, 1 Gakuen-Uegahara, 669-1330, Sanda, JAPAN.
The natural Z-scheme of oxygenic photosynthesis efficiently drives electron transfer from photosystem II (PSII) to photosystem I (PSI) via an electron transport chain, despite the lower energy levels of PSII. Inspired by this sophisticated mechanism, we present a layered cascade bio-solar cell (CBSC) that emulates the Z-scheme. In this design, chlorophyll derivatives (Chl) act as PSI analogs, while bacteriochlorophyll derivatives (BChl) serve as PSII analogs in the active layer.
View Article and Find Full Text PDFHummingbirds use compensatory eye movements to stabilize both rotational and translational visual motion.
Proc Biol Sci
January 2025
Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada.
To maintain stable vision, behaving animals make compensatory eye movements in response to image slip, a reflex known as the optokinetic response (OKR). Although OKR has been studied in several avian species, eye movements during flight are expected to be minimal. This is because vertebrates with laterally placed eyes typically show weak OKR to nasal-to-temporal motion (NT), which simulates typical forward locomotion, compared with temporal-to-nasal motion (TN), which simulates atypical backward locomotion.
View Article and Find Full Text PDFRelationships between Patient-Reported Outcomes and Predictors of Second ACL Injuries during Unanticipated Jump Landings.
Med Sci Sports Exerc
November 2024
Department of Psychology, Montana State University, Bozeman, MT.
Reactive and external visual-cognitive demands are prevalent in sport and likely contribute to ACL injury scenarios. However, these demands are absent in common return-to-sport assessments. This disconnect leaves a blind spot for determining when an athlete can return to sport with mitigated re-injury risk.
View Article and Find Full Text PDFStructural insights into binding-site access and ligand recognition by human ABCB1.
EMBO J
January 2025
The Hormel Institute, University of Minnesota, Austin, MN, 55912, USA.
ABCB1 is a broad-spectrum efflux pump central to cellular drug handling and multidrug resistance in humans. However, how it is able to recognize and transport a wide range of diverse substrates remains poorly understood. Here we present cryo-EM structures of lipid-embedded human ABCB1 in conformationally distinct apo-, substrate-bound, inhibitor-bound, and nucleotide-trapped states at 3.
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