Spatial distribution and temporal evolution of DRONPA-fused SNAP25 clusters in adrenal chromaffin cells
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Spatial distribution and temporal evolution of DRONPA-fused SNAP25 clusters in adrenal chromaffin cells. / Antoku, Yasuko; Dedecker, Peter; da Silva Pinheiro, Paulo César; Vosch, Tom André Jos; Sørensen, Jakob Balslev.
In: Photochemical & Photobiological Sciences, Vol. 14, No. 5, 2015, p. 1005-1012.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Spatial distribution and temporal evolution of DRONPA-fused SNAP25 clusters in adrenal chromaffin cells
AU - Antoku, Yasuko
AU - Dedecker, Peter
AU - da Silva Pinheiro, Paulo César
AU - Vosch, Tom André Jos
AU - Sørensen, Jakob Balslev
PY - 2015
Y1 - 2015
N2 - Sub-diffraction imaging of plasma membrane localized proteins, such as the SNARE (Soluble NSF Attachment Protein Receptor) proteins involved in exocytosis, in fixed cells have resulted in images with high spatial resolution, at the expense of dynamical information. Here, we have imaged localized fluorescence bursts of DRONPA-fused SNAP-25 molecules in live chromaffin cells by Total Internal Reflection Fluorescence (TIRF) imaging. We find that this method allows tracking protein cluster dynamics over relatively long times (∼20 min.), partly due to the diffusion into the TIRF field of fresh molecules, making possible the simultaneous identification of cluster size, location and temporal evolution. The results indicate that the DRONPA-fused SNAP-25 clusters display rich dynamics, going from staying constant to disappearing and reappearing in specific cluster domains within minutes.
AB - Sub-diffraction imaging of plasma membrane localized proteins, such as the SNARE (Soluble NSF Attachment Protein Receptor) proteins involved in exocytosis, in fixed cells have resulted in images with high spatial resolution, at the expense of dynamical information. Here, we have imaged localized fluorescence bursts of DRONPA-fused SNAP-25 molecules in live chromaffin cells by Total Internal Reflection Fluorescence (TIRF) imaging. We find that this method allows tracking protein cluster dynamics over relatively long times (∼20 min.), partly due to the diffusion into the TIRF field of fresh molecules, making possible the simultaneous identification of cluster size, location and temporal evolution. The results indicate that the DRONPA-fused SNAP-25 clusters display rich dynamics, going from staying constant to disappearing and reappearing in specific cluster domains within minutes.
U2 - 10.1039/c4pp00423j
DO - 10.1039/c4pp00423j
M3 - Journal article
C2 - 25837695
VL - 14
SP - 1005
EP - 1012
JO - Photochemical & Photobiological Sciences
JF - Photochemical & Photobiological Sciences
SN - 1474-905X
IS - 5
ER -
ID: 137165277