Peroxisome Dynamics: Molecular Players, Mechanisms, and (Dys)functions
Table 1
List of peroxins identified to date. Peroxins described in mammals are shown in bold. Note that mammalian genomes encode three Pex11 proteins: Pex11p, Pex11p, and Pex11p. All abbreviations are defined in the “Abbreviations” section.
Peroxin
Features
Functions
Pex1p
AAA-ATPase
Pex5p recycling, fusion of preperoxisomal vesicles
Pex2p
PMP, RING domain
Subunit of the E3 complex for polyubiquitination of Pex5p
Pex3p
PMP
Docking factor for Pex19p, initiation of macropexophagy
Pex4p
Peripheral PMP
Subunit of the E2 complex of for monoubiquitination of Pex5p
Pex5p
TPR protein
PTS1 import receptor, PTS2 coreceptor
Pex6p
AAA-ATPase
Pex5p recycling, fusion of pre-peroxisomal vesicles
Pex7p
WD40 protein
PTS2 receptor
Pex8p
Peripheral PMP
Pex5p-cargo release factor? Organizer of the protein import machinery?
Pex9p
Erroneously identified open reading frame
Pex10p
PMP, RING domain
Subunit of the E3 complex for mono- and polyubiquitination of Pex5p