Nat. Genet 36, 1255–1257 (2004).

There is a seeming inconsistency between Supplementary Tables 1 and 4 online. Several human-mouse conserved NAGNAG acceptors (Supplementary Table 4 online) do not appear among all human NAGNAG acceptors in the CDS (Supplementary Table 1 online), because we used a more rigid filtering procedure for Supplementary Table 1: only NAGNAG acceptors in unambiguous CDS RefSeq annotations were listed. In addition, Supplementary Table 4 online also shows human-mouse conserved NAGNAG acceptors in the UTR and in CDS with errors or ambiguous characters. A revised version of Supplementary Table 4 is available upon request from the authors.