BG iMatrix 511 is a chemically defined, animal-free, and xeno-free laminin-511 E8 fragment. Laminin-511 is well known to bind to integrin α6ß1, which is located on the cell surface and acts as a substrate for stem cell culture media for various cell types including ESCs and iPSCs. Recombinant laminin-511 E8 fragments are truncated, functional forms of laminin composed of the C-terminal regions of the alpha, beta, and gamma chains. Laminin-511 E8 (150 kDa) retains the full capability for binding to alpha 6 beta 1 integrin.