The platelet F11 receptor is a member of the immunoglobulin family.

The platelet F11R contains 2 C2-type immunoglobulin domains. This figure shows the alignment of the C2-type immunoglobulin domain consensus sequence profiles with the F11R at amino acids 41 to 116 (profile 1) and with the F11R at amino acids 144 to 219 (profile 2). The conserved cysteine residues are boxed.