It has been suggested that the domains I and II from laminin A, B1 and B2 may come together to form a triple helical coiled-coil structure [1].

1: Laminin, a multidomain protein. The A chain has a unique globular domain and homology with the basement membrane proteoglycan and the laminin B chains. Sasaki M, Kleinman HK, Huber H, Deutzmann R, Yamada Y; J Biol Chem 1988;263:16536-16544. PMID:3182802