Abstract
Dynamin 2 is an ubiquitously expressed ∼ 100 kDa GTPase involved in receptor-mediated endocytosis, Golgi budding, and cytoskeletal reorganization. Dynamin molecules assemble around the necks of budding vesicles and constrict membranes in a GTP-dependent process, resulting in vesicle release. The oligomerization state of dynamin 2 in the membrane is still controversial. We investigated dynamin 2 within the plasma membrane of live cells using total internal reflection microscopy coupled with number and brightness analysis. Our results demonstrate that dynamin 2 is primarily tetrameric throughout the entire cell membrane, aside from punctate structures that may correspond to regions of membrane vesiculation.
Original language | English (US) |
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Pages (from-to) | L15-L17 |
Journal | Biophysical journal |
Volume | 100 |
Issue number | 3 |
DOIs | |
State | Published - Feb 2 2011 |
ASJC Scopus subject areas
- Biophysics