SNF7 homolog associated with Alix-2 HSPC134 CHMP4 charged multivesicular body protein 4a SHAX2 hSnf7-1 vacuolar protein sorting-associated protein 32-1 chromatin modifying protein 4A VPS32A CHMP4B VPS32-1 Snf7 homologue associated with Alix 2 SNF7 C14orf123 SNF7-1