the results showed that the open reading frame of chil-15 cdna encompassed 564 base pairs ( bp ) and encoded a protein of 187 amino acids with three potential n-linked glycosylation sites, four conserved cysteine residues, two out-of-frame atg initiation codons in the 5 " untranslated region, and a signal peptide consisting of 66 amino acids . when it was compared with the published sequence of chil-15 cdna, 7 mutant sites were found, and 5 amino acids were changed in predicted amino acids, which indicated that chil-15 may be polymorphic 結果顯示,本研究所用白來航雞il-15cdna5’非編碼區(qū)有兩個框外atg起始密碼子,開放閱讀框由564bp組成,編碼187個氨基酸,其中n末端信號肽含有66個氨基酸殘基,在第48、149和166位的天冬酰胺殘基上有三個潛在的n-糖基化位點。