Attached cultured cells or 6 µm tissue cryosections were fixed with ice-cold acetone for 10 min and immunostained as described in [16 (link)]. The Abs used for labeling are listed in Table S1. To detect and localize the specific interactions of endogenous proteins, the DuoLinkTM in situ PLA (Olink Bioscience, Uppsala, Sweden) was performed [17 (link)]. All immunofluorescence stains were imaged by confocal laser scanning microscopy (LSM800 or LSM880 fast Airyscan; Carl Zeiss AG, Oberkochen, Germany).
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