Antiserum against a peptide corresponding to amino acids 25–39 of human CHMP6 was raised in two rabbits and affinity purified on Affi-Gel beads containing immobilized peptide. Rabbit anti-CHMP3, rabbit anti-ALIX, rabbit anti-EAP30, rabbit anti-CHMP4B, and rabbit anti-EAP20 were described previously (Sharma et al., 2004 (link); Cabezas et al., 2005 (link); Bache et al., 2006 (link); Malerød et al., 2007 (link); Sagona et al., 2010 (link)). Mouse anti–α-tubulin (Sigma-Aldrich), sheep anti–α-tubulin (Cytoskeleton), mouse anti–β-actin (Sigma-Aldrich), goat anti-RacGAP1 (Abcam), rabbit anti-MKLP1 (Santa Cruz Biotechnology, Inc.), goat anti-V5 (Abcam), mouse anti-GFP (Roche), mouse anti-TSG101 (BD Transduction Laboratories), rabbit anti-CHMP6 (Santa Cruz Biotechnology, Inc.), rabbit anti-CEP55 (Abnova), rabbit anti-VPS28 (Santa Cruz Biotechnology, Inc.), rabbit anti-IST1 (Proteintech), rabbit anti-CHMP4A (Santa Cruz Biotechnology, Inc.), and rabbit anti-mCherry (Acris) were used as primary antibodies. Secondary antibodies included anti-mouse, anti-rabbit, and anti-goat Alexa Fluor 488 (Jackson ImmunoResearch), Alexa Fluor 555 (Molecular Probes), Alexa Fluor 568 (Molecular Probes), Alexa Fluor 647 (Jackson ImmunoResearch), and DyLight649 (Jackson ImmunoResearch).