Laminin in serum mainly functions as:
Laminin represents major non-collagenous component of basement membrane thin sheet of specialized extracellular matrix ten to one hundred nanometers thick underlying epithelia, surrounding muscle fibers, Schwann cells, essential for tissue integrity and polarity. Heterotrimeric glycoprotein about eight hundred fifty kilodalton composed of alpha, beta, gamma chains encoded by different genes LAMA LAMB LAMC, assembled in endoplasmic reticulum via coiled coil heptad repeat forming long arm approximately eighty nanometers and three short arms each thirty nanometers forming cross-shaped molecule ob
Ref: Yurchenco & Patton 1994 laminin heterotrimer basement membrane LG domains; Alberts MBoC integrin α6β1 α6β4 attachment survival.