WDR54 has a regulatory effect on ERK signaling pathway activity in response to EGF stimulation, when is cross-linked to form dimers and trimers. It colocalizes with the EGF receptor in a WDR54-specific vesicle where it sustains the internalisation and controls the degradation of the EGF receptor after EGF stimulation [1].

1: Transglutaminase-mediated cross-linking of WDR54 regulates EGF receptor-signaling. Maeda A, Nishino T, Matsunaga R, Yokoyama A, Suga H, Yagi T, Konishi H; Biochim Biophys Acta Mol Cell Res. 2019;1866:285-295. PMID:30458214