This paper presents the updated version of the data base of ribosomal 5S ri
bonucleic acids (5S rRNA) and their genes (5S rDNA). This edition of the da
ta bank contains 1889 primary structures of 5S rRNA and 5S rDNA. These incl
ude 60 archaebacterial, 439 eubacterial, 63 plastid, 9 mitochondrial and 13
18 eukaryotic sequences. The nucleotide sequences of 5S rRNAs or 5S rDNAs a
re divided according to the taxonomic position of organisms. The sequences
stored in the database can be viewed and retrieved using the taxonomic brow
ser at the URL: http://rose.man. poznan.pl/5SData/5SRNA. html.