Author

Alexander Upcher

Ben-Gurion University of the NegevORCID 0000-0002-0910-6552Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

Click to filter author papers

Biophysics· 1 Cell Biology· 1 Developmental Biology· 1

Signature Assays, Organisms & Methods

Click to filter · or open tag

Research Focus:cell signaling & trafficking· 2 Approach:experimental assay· 2 Organism:mouse· 2 Research Focus:cell type annotation· 1 Assay:fluorescence / live-cell microscopy· 1 Research Focus:host-pathogen & immune response· 1 Organism:human· 1 Approach:microscopy & imaging analysis· 1

Frequent Co-Authors

Alexander Kai BuelliD· 1 shared Amir ArgoettiiD· 1 shared Avital WagneriD· 1 shared Bader RayaniD· 1 shared Benjamin A. PalmeriD· 1 shared Christian F. PantojaiD· 1 shared Dikla NachmiasiD· 1 shared Dror HawlenaiD· 1 shared

Activity by Year

2022-2026 · peak 1/yr

Co-Author Collaboration Network

10 top collaborators · 16 mutual co-author links

Click any collaborator node to inspect or filter shared papers

Focal author (center)Selected co-authorORCID co-authorUnlinked name

Curved chords = mutual co-authorship

1 shared paperBiophysics

Alexander Kai BuellORCID

Mutual co-authors in cluster

Author profile →

3 papers

Recent·Most cited

RNA Selectively Modulates Activity of Virulent Amyloid PSMα3 and Host Defense LL-37 via Phase Separation and Aggregation Dynamics

Bader Rayan, Eilon Barnea, Rinat Yona Indig, Christian F. Pantoja, Jesse Gayk, Yael Lupu-Haber, Alexander Upcher, Amir Argoetti, Jacob Aunstrup Larsen, Alexander Kai Buell, Markus Zweckstetter, Meytal Landau

The paper shows RNA modulates assembly and activity of two -helical peptides, PSM3 and LL-37, through phase separation and aggregation dynamics, affecting virulence and host defense.

eLife · Jul 20, 2026Peer-reviewedBiophysics

Loss of CHMP2A implicates an ordered assembly of ESCRT-III proteins during cytokinetic abscission

Nikita Kamenetsky, Dikla Nachmias, Suman Khan, Ori Avinoam, Itay Hazan, Alexander Upcher, Natalie Elia

This study shows that CHMP2A is essential for the ordered assembly of ESCRT-III proteins during cytokinetic abscission, revealing a hierarchical organization of these subunits.

Molecular Biology of the Cell · Sep 10, 2025Peer-reviewedCell Biology

Ontogenetic Color Switching in Lizards as a by-Product of Guanine Cell Development

Gan Zhang, Venkata Jayasurya Yallapragada, M. Shemesh, Avital Wagner, Alexander Upcher, Iddo Pinkas, H. L. O. McClelland, Dror Hawlena, Benjamin A. Palmer

The paper shows that ontogenetic color switching in lizards results from reorganization of guanine crystals in chromatophore cells during development.

bioRxiv · Jan 12, 2022 · PreprintDevelopmental Biology