Lamellas formed on the mica by protein 1F9, a recombinant analogue of the web protein, have been studied by atomic force microscopy. It has been shown that the molecules of 1F9 dissolved in strong solvents are capable of aggregating on the mica surface to form lamellas less than 1 nm in height and more than 1 microm in length. A model of a plane zigzag has been constructed to describe the conformation of 1F9 molecules on the mica surface.