Figure 2.

Comparison of the translation start sites and 5′ UTR of the human ABCA1, mouse ABCA1A, and human ABCR genes. The transcription start site (G⁺¹) is boxed. The three stop codons upstream of the newly identified translation start site at position +315 bp (boxed) are underlined. The previously identified translation start site at position +495 bp (boxed) is also shown. The location of the highly conserved purine residues (−3) and G (+4) relative to both ATG start sites are indicated. The putative 45-aa signal peptide is underlined.