This paper presents the updated version (Y2K) of the database of ribosomal
5S ribonucleic acids (5S rRNA) and their genes (5S rDNA), http://rose.man/p
oznan. pI/5SData/index.html. This edition of the database contains 1985 pri
mary structures of 5S rRNA and 5S rDNA. They include 60 archaebacterial, 47
0 eubacterial, 63 plastid, nine mitochondrial and 1383 eukaryotic sequences
. The nucleotide sequences of the 5S rRNAs or 5S rDNAs are divided accordin
g to the taxonomic position of the source organisms.