1. Quantitative comparison of a human cancer cell surface proteome between interphase and mitosis
Confocal images representing the localization of PCDH7. U2OS cells expressing full‐length (WT) PCDH7 at mitosis (top) and interphase (middle). Cytoplasmic deleted (CytΔ) PCDH7‐expressing cells at mitosis (middle) and interphase (bottom). PCDH7, green; DNA, blue. Scale bar, 20 μm. Quantification of PCDH7::GFP (WT and CytΔ) protein localization on the cell surface in mitosis [WT (n = 11), CytΔ (n = 6), red] and interphase [WT (n = 25), CytΔ (n = 20), blue]. Interphase cytΔ PCDH7 localizes to the cell surface more than WT (full length) PCDH7 (insets). Bars show mean ± SEM. In interphase co‐localization between PCDH7 and ER marker KDEL. HeLa cells were transiently transfected with PCDH7::GFP (green) (ectopic), fixed and stained for ER marker KDEL (red) (interphase, top panel). Interphase (middle panel) and mitotic (bottom panel) HeLa cells were fixed and stained against (endogenous) PCDH7 and KDEL. Scale bar, 5 μm. PCDH7 and PCDH1 enriched on endoplasmic reticulum fraction. Whole‐cell lysate, cytoplasmic, endoplasmic, and mitochondrial fractions were blotted against an endoplasmic reticulum protein, KDEL, a cytoplasmic protein, actin, a mitochondrial protein Cox‐2 and PCDH7, PCDH1. Source data are available online for this figure.
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EMBO J, Volume: 34, Issue: 2, Pages: , First published: 04 December 2014, DOI: ( /embj )