Ig-like domains of HLy9-β. HLy9-β Ig-like domains are compared with HumLy9 and human CD48. Solid lines above the sequence predicted β-sheets. Conserved residues appear in stippled boxes. Gaps are indicated with broken line to allow optimal alignment of the proteins. (A) First Ig-Like domain; (B) Second Ig-like domain. * indicates conserved amino acids of the Ig superfamily.