Interfaces > The number of contact pairs of Secondary structures

Dimer Interface classification

Class	Fold	Number of chains
All alpha proteins All alpha proteins	Four-helical up-and-down bundle Four-helical up-and-down bundle	1
All alpha proteins All alpha proteins	Nuclear receptor ligand-binding domain Nuclear receptor ligand-binding domain	8
Alpha and beta proteins (a+b) Not classified	MHC antigen-recognition domain Not classified	1
Not classified Not classified	Not classified Not classified	3

PDL