TABLE 1.

Summary of genome features from sequenced Agrobacterium strains

Characteristic	A. tumefaciens C58	A. radiobacter K84	A. vitis S4
Biovariant	Biovar I	Biovar II	Biovar III
Genome size (bp)	5,674,260	7,273,300	6,320,946
% G+C content	59.0	59.9	57.5
No. of chromosomesa	2	1	2
No. of plasmids	2	4b	5
No. of indicated protein-coding genes
Total	5,385	6,752	5,479
With functionality assigned	3,516	5,099	3,897
Conserved hypothetical	1,287	1,201	1,282
Hypothetical	582	452	300
Pseudogenes	28	68	90
No. of indicated RNA genes
rRNA operons	4	3	4
tRNAs	56	51	54
Other RNAsc	26	23	30
Genomic islands
Total no.	38	59	20
Avg size (kb)	23.3	28.2	33.0

^aA chromosome is defined here as a replicon harboring rRNA operons and essential genes.

^bThe 2.65-Mbp replicon, which does not meet our definition of a chromosome, is included here (see Results).

^cIncludes transfer-messenger RNAs, signal recognition particle RNAs, suhB, riboswitches, and miscellaneous features.