Nature 418, 742 (2002); doi: 10.1038/418742a

In the first paragraph of this Brief Communications, accession numbers are provided for four rRNAs. The database that they refer to is incorrect (it should be the European Nucleotide Archive (ENA) rather than GenBank), the order in which the accessions are indicated is also incorrect, and there is an extra ‘3’ in one the of accession numbers. The text should say: “…two mature A-type rRNAs (A1, A2; ENA accession numbers, AF503871 and AF503870) and two mature S-type rRNAs (S1, S2; ENA accession numbers, AF503869 and AF503868)…”.