Nucleotide sequence and protein translation of the partial ECGF-1 cDNA isolated from the cDNA library. The internal ATG codon of the primary ECGF-1 ORF and the CTG start codon of the alternative ORF are depicted in bold and underlined. The SNP and amino acid substitutions are indicated with arrows. The CTL epitope recognized by CTL clone RDR173 is boxed. Numbers are relative to the full-length ECGF cDNA and protein.