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© Research
Publication : Ultramicroscopy

Accurate membrane tracing in three-dimensional reconstructions from electron cryotomography data.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Ultramicroscopy - 01 Aug 2015

Page C, Hanein D, Volkmann N,

Link to Pubmed [PMID] – 25863868

Link to DOI – S0304-3991(15)00070-410.1016/j.ultramic.2015.03.021

Ultramicroscopy 2015 Aug; 155(): 20-26

The connection between the extracellular matrix and the cell is of major importance for mechanotransduction and mechanobiology. Electron cryo-tomography, in principle, enables better than nanometer-resolution analysis of these connections, but restrictions of data collection geometry hamper the accurate extraction of the ventral membrane location from these tomograms, an essential prerequisite for the analysis. Here, we introduce a novel membrane tracing strategy that enables ventral membrane extraction at high fidelity and extraordinary accuracy. The approach is based on detecting the boundary between the inside and the outside of the cell rather than trying to explicitly trace the membrane. Simulation studies show that over 99% of the membrane can be correctly modeled using this principle and the excellent match of visually identifiable membrane stretches with the extracted boundary of experimental data indicates that the accuracy is comparable for actual data.

https://pubmed.ncbi.nlm.nih.gov/25863868