Table 1.

Facilitated processing and/or stabilization of their single-transmembrane-domained partners by tetraspanins

Tetraspanins	Partner proteins	References
UPIa	UPII	This study and Tu et al. (2002)
UPIb	UPIIIa	This study and Tu et al. (2002)
CD9	Pro-TGF-α	Shi et al. (2000)
CD9	CD4	This study
CD81	CD19	Shoham et al. (2003)
CD81	EWI-2	Stipp et al. (2003a)
CD81	CD4	This study
CD82	CD4	This study