Nucleotide and deduced amino acid encoding region of C. dromedarius IFNα. Important amino acid residues and regions include: residues that may contact N-Acetyl-2-Deoxy- are indicated by the box; residues that may contact an SO4 ion are indicated in bold underline; residues that may contact Zn2+ are indicated by bold double underline, conserved amino acid residues in the IFNα protein are indicated by bold dashed underline, residues involved in IFNAR-1 binding are indicated with the circle, and residues involved in IFNAR-2 binding are indicated by the bold dashed box. Arrows indicate the location of the forward and reverse primers with restriction enzyme sites presented in bold underline italics.