TY  - JOUR
AU  - Abdollahzadeh, Iman
AU  - Hendriks, Johnny
AU  - Sanwald, Julia L.
AU  - Simons, Indra M.
AU  - Hoffmann, Silke
AU  - Weiergräber, Oliver H.
AU  - Willbold, Dieter
AU  - Gensch, Thomas
TI  - Autophagy-Related Proteins GABARAP and LC3B Label Structures of Similar Size but Different Shape in Super-Resolution Imaging
JO  - Molecules
VL  - 24
IS  - 9
SN  - 1420-3049
CY  - Basel
PB  - MDPI
M1  - FZJ-2019-02913
SP  - 1833 -
PY  - 2019
AB  - Subcellular structures containing autophagy-related proteins of the Atg8 protein family have been investigated with conventional wide-field fluorescence and single molecule localisation microscopy. Fusion proteins of GABARAP and LC3B, respectively, with EYFP were overexpressed in HEK293 cells. While size distributions of structures labelled by the two proteins were found to be similar, shape distributions appeared quite disparate, with EYFP-GABARAP favouring circular structures and elliptical structures being dominant for EYFP-LC3B. The latter also featured a nearly doubled fraction of U-shape structures. The experimental results point towards highly differential localisation of the two proteins, which appear to label structures representing distinct stages or even specific channels of vesicular trafficking pathways. Our data also demonstrate that the application of super-resolution techniques expands the possibilities of fluorescence-based methods in autophagy studies and in some cases can rectify conclusions obtained from conventional fluorescence microscopy with diffraction-limited resolution.
LB  - PUB:(DE-HGF)16
C6  - pmid:31086037
UR  - <Go to ISI:>//WOS:000469518100192
DO  - DOI:10.3390/molecules24091833
UR  - https://juser.fz-juelich.de/record/862657
ER  -