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A twisted cell-cell adhesion molecule complex structure revealed by single-molecule fluorescence microscopy and high-speed atomic force microscopy

Researchers have elucidated the mechanism of CELSR cadherin dimerization, revealing a twisted cell-cell adhesion molecule complex structure. The extracellular domains of CELSR cadherins exhibited strand- and globule-like portions, which bound through strand-like structures in an antiparallel orientation.

SourceNational Institutes of Natural Sciences·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateApr 24, 2023

Visualization of binding processes of cell-cell adhesion molecules in solution

The study reveals multiple dimeric structures of cadherins in solution, including W-, cross-, and S-shaped dimers. The researchers propose a novel conformation, the S-shaped dimer, and suggest that binding mechanism progresses through sliding motion followed by flipping motion to form stable SS-dimers.

SourceNational Institutes of Natural Sciences·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJul 18, 2022

'Molecular Velcro' enables tissues to sense, react to mechanical force

A University of Illinois study discovered that cadherin proteins can sense mechanical stress and alter cell communication, promoting tissue growth and tumorigenesis. The findings suggest a potential mechanism for preventing certain types of tissue growth by mutating cadherin molecules.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateFeb 10, 2022

Sticking together

Researchers find that cell adhesion proteins and a gradient of signaling molecule Sonic Hedgehog work together to create precise sorting of cells into domains. By combining experiments from biophysics, genetics, and developmental biology, the team successfully solves the puzzle of how patterns are created in developing organisms.

The glue that keeps cells together

A study published in Nature Physics reveals that small changes in physical parameters can significantly impact the formation and growth of cell-cell contacts. The researchers used computer simulations and experiments to investigate the biophysicics of cadherin proteins, which play a crucial role in maintaining cellular bonds.

SourceUniversity of Würzburg·JournalNature Physics·DateJun 14, 2017

Illuminating the contacts

Researchers used super-resolution imaging to map the organization of cadherin-based adhesions in cells. The study revealed a multi-layered structure with compartments separated by an interface layer containing vinculin, which plays a key role in fine-tuning mechanical properties.

SourceNational University of Singapore·JournalNature Cell Biology·DateFeb 15, 2017

Stability without junctions

Researchers discovered that cadherin clusters prevent cortical deformation by acting as structural anchors in the cell membrane. This new function of non-junctional cadherin clusters regulates cortical movement and stability, allowing for essential processes like cytokinesis to occur without dramatic changes.

SourceNational University of Singapore·JournalCurrent Biology·DateDec 27, 2016

Which way is up?

A new UCSB study shows that the protein E-cadherin promotes collective cell migration by guiding cells to move and migrate. The researchers used innovative experimental tools to measure forces on E-cadherin molecules, revealing a non-perturbing approach to understanding tissue morphology.

Force of nature: Defining the mechanical mechanisms in living cells

A study at Stanford University reveals the mechanical mechanisms in living cells, showing that cadherin-catenin-actin structure exerts force inside and between cells in living tissues. This understanding could have implications for biological processes such as tissue development, tumor growth, and complex organism formation.

SourceStanford University School of Engineering·JournalProceedings of the National Academy of Sciences·DateJul 16, 2012

Smarter toxins help crops fight resistant pests

A UA-led team of researchers discovered a new edge in overcoming resistance to certain pests by modifying the structure of crop-protecting proteins called Bt toxins. The modified toxins were found to be effective against some resistant strains, but not always working as expected and requiring further testing.

SourceUniversity of Arizona·JournalNature Biotechnology·DateOct 9, 2011