Results 41 to 50 of about 14,296,855 (364)

Of puzzles and pavements: a quantitative exploration of leaf epidermal cell shape

bioRxiv, 2018
Summary The epidermal cells of leaves lend themselves readily to observation and display many shapes and types: tabular pavement cells, complex trichomes, and stomatal complexes1. Pavement cells from Zea mays (maize) and Arabidopsis thaliana (arabidopsis)
Róza V Vőfély, J. Gallagher, G. Pisano, M. Bartlett, Siobhan A. Braybrook   +4 more
semanticscholar   +1 more source

Cell-Responsive Shape Memory Polymers

ACS Biomaterials Science & Engineering, 2022
Recent decades have seen substantial interest in the development and application of biocompatible shape memory polymers (SMPs), a class of "smart materials" that can respond to external stimuli. Although many studies have used SMP platforms triggered by thermal or photothermal events to study cell mechanobiology, SMPs triggered by cell activity have ...
Junjiang Chen, Lauren E. Hamilton, Patrick T. Mather, James H. Henderson   +3 more
openaire   +2 more sources

Secreted retropepsin-like enzymes are essential for stress tolerance and biofilm formation in Pseudomonas aeruginosa

mBio
Proteases regulate important biological functions. Here, we present the structural and functional characterization of three previously uncharacterized aspartic proteases in Pseudomonas aeruginosa. We show that these proteases have structural hallmarks of
Justin D. Lormand, Charles H. Savelle, Jennifer K. Teschler, Eva López, Richard H. Little, Jacob G. Malone, Fitnat H. Yildiz, María J. García-García, Holger Sondermann   +8 more
doaj   +1 more source

Distinct regions of H. pylori’s bactofilin CcmA regulate protein–protein interactions to control helical cell shape

eLife, 2022
The helical shape of Helicobacter pylori cells promotes robust stomach colonization; however, how the helical shape of H. pylori cells is determined is unresolved.
Sophie R Sichel, Benjamin P Bratton, Nina R Salama   +2 more
doaj   +1 more source

3D Organisation of Cells in Pseudostratified Epithelia

Frontiers in Physics, 2022
Pseudostratified epithelia have smooth apical and basal surfaces, yet along the apical-basal axis, cells assume highly irregular shapes, which we introduce as punakoids. They interact dynamically with many more cells than visible at the surface. Here, we
Dagmar Iber, Dagmar Iber, Roman Vetter, Roman Vetter   +3 more
doaj   +1 more source

Decoupling the Roles of Cell Shape and Mechanical Stress in Orienting and Cueing Epithelial Mitosis

bioRxiv, 2017
Distinct mechanisms involving cell shape and mechanical force are known to influence the rate and orientation of division in cultured cells. However, uncoupling the impact of shape and force in tissues remains challenging. Combining stretching of Xenopus
Alexander Nestor-Bergmann, G. Stooke-Vaughan, Georgina K Goddard, T. Starborg, O. Jensen, S. Woolner   +5 more
semanticscholar   +1 more source

Conserved cellular patterning in the mesophyll of rice leaves

Plant Direct, 2023
The mesophyll cells of grass leaves, such as rice, are traditionally viewed as displaying a relatively uniform pattern, in contrast to the clear distinctions of palisade and spongy layers in typical eudicot leaves. This quantitative analysis of mesophyll
Jen Sloan, Saranrat Wang, Qi Yang Ngai, Yi Xiao, Jodie Armand, Matthew J. Wilson, Xin‐Guang Zhu, Andrew J. Fleming   +7 more
doaj   +1 more source

Aggregate Filamentous Growth Responses in Yeast

mSphere, 2019
Many fungal species, including pathogens, undergo a morphogenetic response called filamentous growth, where cells differentiate into a specialized cell type to promote nutrient foraging and surface colonization.
Jacky Chow, Heather M. Dionne, Aditi Prabhakar, Amit Mehrotra, Jenn Somboonthum, Beatriz Gonzalez, Mira Edgerton, Paul J. Cullen   +7 more
doaj   +1 more source

“Influence of plasmids, selection markers and auxotrophic mutations on Haloferax volcanii cell shape plasticity”

Frontiers in Microbiology, 2023
Haloferax volcanii and other Haloarchaea can be pleomorphic, adopting different shapes, which vary with growth stages. Several studies have shown that H.
Megha Patro, Megha Patro, Iain G. Duggin, Sonja-Verena Albers, Solenne Ithurbide   +4 more
doaj   +1 more source

Coordinated and Distinct Roles of Peptidoglycan Carboxypeptidases DacC and DacA in Cell Growth and Shape Maintenance under Stress Conditions

Microbiology Spectrum, 2023
Peptidoglycan (PG) is an essential bacterial architecture pivotal for shape maintenance and adaptation to osmotic stress. Although PG synthesis and modification are tightly regulated under harsh environmental stresses, few related mechanisms have been ...
Umji Choi, Si Hyoung Park, Han Byeol Lee, Ji Eun Son, Chang-Ro Lee   +4 more
doaj   +1 more source