[i] Transcribed sequences are shown in uppercase letters, and nontranscribed regions in lowercase letters. Untranslated regions are shown in italics. The conserved GT/AG exon/intron junctions are shown in boldface type. For the first exon the transcription start site is shown instead of a splice acceptor; for the last exon the first of two closely associated polyadenylation signals is shown in bold italics instead of a splice donor. Amino acid residues are indicated with respect to each boundary. Numbers refer to the corresponding positions in the DAG1 cDNA starting with +1 at the adenosine of the translation initiation codon.