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Spontaneous rotations of epithelial spheres reveals chiral tissue patterning mechanisms, showing the interplay between geometry, topology, and collective dynamics.

From the article:

Emergent chirality in active solid rotation of pancreas spheres
Tzer Han Tan, Aboutaleb Amiri, Irene Seijo-Barandiaran, Michael F. Staddon, Anne Materne, Sandra Tomas, Charlie Duclut, Marko Popović, Anne Grapin-Botton, and Frank Jülicher
PRX Life 2, 033006 (2024)

EDITORIALS AND ANNOUNCEMENTS

Editorial: PRX Life Celebrates Its First Anniversary

Serena Bradde and Margaret Gardel

PRX Life 2, 030001 (2024) - Published 25 July, 2024

In its inaugural year, PRX Life has focused on enhancing the experience of authors and referees working at the intersection of physics and biology. Our goal is to give this interdisciplinary community a voice. Discover what we have accomplished and see what is coming next.

HIGHLIGHTED ARTICLES

Emergent chirality in active solid rotation of pancreas spheres

Tzer Han Tan, Aboutaleb Amiri, Irene Seijo-Barandiaran, Michael F. Staddon, Anne Materne, Sandra Tomas, Charlie Duclut, Marko Popović, Anne Grapin-Botton, and Frank Jülicher

PRX Life 2, 033006 (2024) - Published 8 August, 2024

Spontaneous rotations of epithelial spheres reveals chiral tissue patterning mechanisms, showing the interplay between geometry, topology, and collective dynamics.

Proteome-Wide Assessment of Protein Structural Perturbations under High Pressure

Haley M. Moran, Edgar Manriquez-Sandoval, Piyoosh Sharma, Stephen D. Fried, and Richard E. Gillilan

PRX Life 2, 033011 (2024) - Published 9 September, 2024

A novel method to assess protein behavior in extreme environments on the proteome scale shows that proteins with more voids can be more resistant to deformation under high pressure.

ARTICLES

Mesoscale molecular assembly is favored by the active, crowded cytoplasm

Tong Shu, Gaurav Mitra, Jonathan Alberts, Matheus P. Viana, Emmanuel D. Levy, Glen M. Hocky, and Liam J. Holt

PRX Life 2, 033001 (2024) - Published 10 July, 2024

Experiments with synthetic droplets in cells, combined with molecular simulations, show the impact of macromolecular crowding and ATP-driven activities on condensate formation.

Actin Filament Barbed-End Depolymerization by Combined Action of Profilin, Cofilin, and Twinfilin

Ankita Arya, Sandeep Choubey, and Shashank Shekhar

PRX Life 2, 033002 (2024) - Published 16 July, 2024

A theory experimental dialogue offers new insights into the multicomponent depolymerization of actin filaments by profilin, cofilin, and twinfilin.

Temporally Correlated Active Forces Drive Segregation and Enhanced Dynamics in Chromosome Polymers

Sumitabha Brahmachari, Tomer Markovich, Fred C. MacKintosh, and José N. Onuchic

PRX Life 2, 033003 (2024) - Published 23 July, 2024

Adding temporally persistent noise to a polymer model of chromosomes to account for motor-generated active forces captures correlated long-distance motion, dynamic compaction, and other chromosome behaviors.

Bacteria Navigate Anisotropic Media using a Flagellar Tug-of-Oars

Ameya G. Prabhune, Andy S. García-Gordillo, Igor S. Aranson, Thomas R. Powers, and Nuris Figueroa-Morales

PRX Life 2, 033004 (2024) - Published 25 July, 2024

Opposing flagellar bundles enable bacterial swimming in constrained environments via two novel mechanisms.

Dynamic Cost Allocation Allows Network-Forming Forager to Switch Between Search Strategies

Lisa Schick, Mirna Kramar, and Karen Alim

PRX Life 2, 033005 (2024) - Published 1 August, 2024

Quantitative analysis of the morphological transition in slime mold reveals how this microorganism reorganizes into different shapes, balancing building and transport costs.

Emergent chirality in active solid rotation of pancreas spheres

Tzer Han Tan, Aboutaleb Amiri, Irene Seijo-Barandiaran, Michael F. Staddon, Anne Materne, Sandra Tomas, Charlie Duclut, Marko Popović, Anne Grapin-Botton, and Frank Jülicher

PRX Life 2, 033006 (2024) - Published 8 August, 2024

Spontaneous rotations of epithelial spheres reveals chiral tissue patterning mechanisms, showing the interplay between geometry, topology, and collective dynamics.

Uncovering Universal Characteristics of Homing Paths using Foraging Robots

Somnath Paramanick, Arup Biswas, Harsh Soni, Arnab Pal, and Nitin Kumar

PRX Life 2, 033007 (2024) - Published 13 August, 2024

Using a light-controlled robot as a model forager, a first-passage-based framework accurately captures quantitative features of homing, namely the ability for animals to return home from unfamiliar locations, providing a theoretical basis for understanding this ubiquitous behavior.

Enhancer-Insulator Pairing Reveals Heterogeneous Dynamics in Long-Distance 3D Gene Regulation

Lucas Hedström, Ralf Metzler, and Ludvig Lizana

PRX Life 2, 033008 (2024) - Published 22 August, 2024

A model of gene regulation, calibrated on experimental data, proposes that insulator elements weakly bind to chromatin, challenging the previous understanding that insulators only interact with each other when regulating gene activation.

Intrinsic Motivation in Dynamical Control Systems

Stas Tiomkin, Ilya Nemenman, Daniel Polani, and Naftali Tishby

PRX Life 2, 033009 (2024) - Published 29 August, 2024

A new method computes the maximization of the capacity for potential actions to influence future states in continuous dynamical systems, linking behavior to fundamental properties for systems of agents autonomously deciding how to act without being given an explicit reward.

Three Photon Excited Image Scanning Microscopy for in-Depth Super-Resolution Studies of Biological Samples

Anton Classen, I. Michel Antolovic, Stanislav Vitha, Mia Pacheco, Dylan McCreedy, Alexei V. Sokolov, Girish S. Agarwal, Aart J. Verhoef, and Alma Fernández

PRX Life 2, 033010 (2024) - Published 5 September, 2024

A three-photon excited microscopy technique, combined with a multi-element detector and deconvolutional image processing methods, achieves deep imaging of thick biological samples with sub-diffraction-limit resolution better than λ/8

Proteome-Wide Assessment of Protein Structural Perturbations under High Pressure

Haley M. Moran, Edgar Manriquez-Sandoval, Piyoosh Sharma, Stephen D. Fried, and Richard E. Gillilan

PRX Life 2, 033011 (2024) - Published 9 September, 2024

A novel method to assess protein behavior in extreme environments on the proteome scale shows that proteins with more voids can be more resistant to deformation under high pressure.

Guiding Diffusion Models for Antibody Sequence and Structure Co-design with Developability Properties

Amelia Villegas-Morcillo, Jana M. Weber, and Marcel J. T. Reinders

PRX Life 2, 033012 (2024) - Published 12 September, 2024

A new approach for antibody design uses generative diffusion models to guide the discovery of complementarity-determining regions with properties suitable for therapeutic applications.

Measuring Irreversibility from Learned Representations of Biological Patterns

Junang Li, Chih-Wei Joshua Liu, Michal Szurek, and Nikta Fakhri

PRX Life 2, 033013 (2024) - Published 19 September, 2024

By leveraging advances in deep learning this study provides robust and model-free measurements of nonequilibrium and nonlinear behavior in complex living processes.

Modeling the 3D Spatiotemporal Organization of Chromatin Replication

G. Forte, S. Buonomo, P. R. Cook, N. Gilbert, D. Marenduzzo, and E. Orlandini

PRX Life 2, 033014 (2024) - Published 26 September, 2024

PolyRep, a 3D polymer model, simulates chromatin replication and reveals how non-specific interactions between chromatin and replisome components influence the dynamics of replication.

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