blocking buffer (2.5% BSA or FBS, 0.1% TritonX-100,
0.03% NaN3 in DPBS). Primary and secondary antibodies were
diluted in blocking buffer and incubated for 2 h at RT. Coverslips were mounted
using Gelvatol, or Prolong Diamond (ThermoFisher Scientific) and imaged with the
inverted confocal microscope Zeiss LSM700. Images were processed with
ImageJ/FIJI. For 3D-structured illumination microscopy (SIM) (
coverslips and immunostained as above. Coverslips were mounted with Vectashield
(Vectorlabs). 3D-SIM imaging was performed on a Zeiss Elyra PS.1 microscope
equipped with a 100x/1.40 oil objective lens. Exciting light was directed
through a movable optical grating to generate a fine-striped interference
pattern on the same plane. Z-stacks of 15 optical sections with a step size of
0.1 μm were acquired to generate images in maximum intensity projection.
The epitope of the ASPM (216-1) antibody43 (link), NDNYGLNQDLESES, is located prior to the TALEN target
site. The following antibodies were used at 1:100 – 1:2000: Centrin
(Millipore 20H5), Par6α (SCBT sc-14405), Par6α (Abcam ab180159),
β-actin (Proteintech 20536-1-AP), ASPM (SCBT sc-98903), ASPM (gift from
J. Bond, 216-1), Ninein (Biolegend Poly6028), aPKCζ (SCBT sc-216).