1         11        21        31        41        51        61        71        81        91        101       111       121       131       141       151  
                       |---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|---------|----
 IL2_SHEEP             MYKIQPLSCIALTLALVANGAPTSSSTGNTMKEVKSLLLDLQLLLEKVKNPENLKLSRMHTFNFYMPKVNATELKHLKCLLEELKLLEEVLDLAPSKNLNTREIKDSMDNIKRIVLELQGSETRFTCEYDDATVKAVEFLNKWITFCQSIYSTMT  
 IL2_BOVIN             MYKIQLLSCIALTLALVANGAPTSSSTGNTMKEVKSLLLDLQLLLEKVKNPENLKLSRMHTFDFYVPKVNATELKHLKCLLEELKLLEEVLNLAPSKNLNPREIKDSMDNIKRIVLELQGSETRFTCEYDDATVNAVEFLNKWITFCQSIYSTMT  
 IL2_PIG               MYKMQLLCCIALTLALMANGAPTSSSTKNTKKQLEPLLLDLQLLLKEVKNYENADLSRMLTFKFYMPKQ-ATELKHLQCLVEELKALEGVLNLGQSKNSDSANIKESMNNINVTVLELKGSETSFKCEYDDETVTAVEFLNKWITFCQSIYSTLT  
 IL2_HUMAN             MYRMQLLSCIALSLALVTNSAPTSSSTKKTQLQLEHLLLDLQMILNGINNYKNPKLTRMLTFKFYMPKK-ATELKHLQCLEEELKPLEEVLNLAQSKNFHLRP-RDLISNINVIVLELKGSETTFMCEYADETATIVEFLNRWITFCQSIISTLT