RNRdb, a curated database of the universal enzyme family ribonucleotide reductase, reveals a high level of misannotation in sequences deposited to Genbank

Table 4 RNR distribution

Combination	Archaea	Archaeal viruses	Bacteria	Bacteriophages	Eukaryotes	Eukaryotic viruses	Totals
I	0	0	211	18	56	81	366
II	20	1	87	14	1	0	123
III	15	0	11	1	0	0	27
I+II	2	0	82	0	2	1	87
I+III	0	0	222	14	1	0	237
II+III	15	0	47	0	0	0	62
I+II+III	1	0	54	0	2	0	57
None	0	0	3	0	2	0	5
Totals	53	1	717	47	64	82	964

Combinations of RNR classes in the cellular domains and viruses. This table only contains data from fully sequenced genomes. We have exhaustively verified absence of RNRs in organismal, but not in viral genomes.

ISSN: 1471-2164