Nucleotide- and deduced amino acid sequence of chicken ART4. A) The nucleotide sequence is numbered relative to the initiation codon that is represented by bold white letters on black background. The derived amino acid sequence is shown below the nucleotide sequence. Predicted sites for N-glycosylation are indicated by closed circles. The N- and C-terminal signal peptides are represented by bold letters. Asterisk indicates the stop codon. Exon 2 is highlighted in grey. ATG codons out of reading frame are indicated by bold black letters on grey background. AAA... (bold) represents the poly A tail of the mRNA and the polyadenylation signal is shown in bold and underlined. B) Schematic representation of the chicken ART4 gene. Exons are indicated by boxes, introns by lines. The lengths of exons and introns are indicated by numbers.