Alignment analysis of amino acid (aa) residues for equine PTX3 full length (E_PTX3_full), spliced (E_PTX3_sp) and human PTX3 (ptx3_H). *Residues in that column are identical in all sequences in the alignment. (:) Conserved substitutions are observed. (.) Semi-conserved substitutions are observed. The pentraxin canonical signature (H×C×S/TW×S/T) is underlined and the two cysteines conserved in all the members of the pentraxin family are in bold. The N-glycosylation Asn site is in bold italics.