Table I. Importin 13 cargo candidates. Proteins (shown with their gene names) that were significant in SILAC 1–4 or only in SILAC 2–4 were extracted from supplemental Table S1 and sorted from higher to lower confidence cargoes. Ubc9: proteins reduced by Ubc9 in SILAC 2–4. Ran: proteins enriched by RanQ69L in SILAC 2–4. Green: proteins validated in importin13 overexpression experiments. Yellow: proteins validated in importin 13 overexpression and binding experiments. Blue: previously described importin 13 cargoes. See supplemental Fig. S2A and supplemental Table S1 for a complete list of cargo candidates and additional information.