PEX3 functions as a PEX19 docking factor in the import of class I peroxisomal membrane proteins.
Fang Y, Morrell JC, Jones JM, Gould SJ, J Cell Biol, 2004 Mar 15 - link

PEX12 interacts with PEX5 and PEX10 and acts downstream of receptor docking in peroxisomal matrix protein import.
Chang CC, Warren DS, Sacksteder KA, Gould SJ, J Cell Biol, 1999 Nov 15 - link

Pex13p is an SH3 protein of the peroxisome membrane and a docking factor for the predominantly cytoplasmic PTs1 receptor.
Gould SJ, Kalish JE, Morrell JC, Bjorkman J, Urquhart AJ, Crane DI, J Cell Biol, 1996 Oct - link