the n-terminal part ( residues 1-57 , approximately ) which is n- and o-glycosylated is connected to a hydrophilic c-terminal domain ( residues 82-128 , approximately ) containing 4 tyrosine residues by a hydrophobic stretch of nonpolar amino acids ( residues 58-81 , approximately ) probably interacting with the membrane lipids and permitting the whole molecule to span the lipid bilayer .
C0025249
membrane lipids
C0023768
lipid bilayer