involved in this MVB sorting pathway. It had originally been identified as a ”class E” vps (vacuolar protein sorting) mutant and was subsequently shown to catalyse the dissociation of ESCRT complexes. Vps4p is anchored via Vps46p to the endosomal membrane. Vps4p assembly is assisted by the conserved Vta1p protein, which regulates its oligomerization status and ATPase activity. Other functions AAA proteases use the energy from ATP hydrolysis to translocate a protein inside the proteasome for degradation. Human proteins containing this domain AAA ATPase family (HGNC) AFG3L2; ATAD1; ATAD2; ATAD2B; ATAD3A; ATAD3B; ATAD3C; ATAD5; BCS1L; CHTF18; CLBP; CLPP; CLPX; FIGN; FIGNL1; FIGNL2; IQCA1; KATNA1; KATNAL1; KATNAL2; LONP1; LONP2; MDN1; NSF; NVL; ORC1; ORC4; PEX1; PEX6; PSMC1; PSMC2 (Nbla10058); PSMC3; PSMC4; PSMC5; PSMC6; RFC1; RFC2; RFC3; RFC4; RFC5; RUVBL1; RUVBL2; SPAST; SPATA5 (SPAF); SPATA5L1; SPG7; TRIP13; VCP; VPS4A; VPS4B; WRNIP1; YME1L1 (FTSH); Torsins TOR1A; TOR1B; TOR2A; TOR3A; TOR4A; Other AK6 (CINAP); CDC6; Pseudogenes AFG3L1P; Further reading References Protein domains Protein families Single-pass transmembrane proteins