The conjugative plasmid of a bean-nodulating Sinorhizobium fredii strain is assembled from sequences of two Rhizobium plasmids and the chromosome of a Sinorhizobiumstrain

Table 3 Functional assignment of pSfr64a ORFs.

Funtion	N^o of ORFs
	Total^a	p42d^b	p42a^c	NGR234^d
Small Molecule Metabolism	48	25	0	15
Macromolecule Metabolism	5	0	2	1
Chemotaxis	4	2	0	1
Transport of small molecules	28	13	0	11
Transposon - related	4	0	0	0
Replication	3	3	0	0
Conjugation	20	0	20	0
Transcriptional regulation	14	5	0	4
Conserved hypothetical	38	3	14	6
Unknown	2
Total	166	51	36	38

^a Number of pSfr64a ORFs assigned to each functional category.
^b Number of pSfr64a ORFs in each category, with highest similarity to ORFs from pRet42d.
^c Number of pSfr64a ORFs in each category, with highest similarity to ORFs from pRet42a.
^d Number of pSfr64a ORFs in each category, with highest similarity to ORFs from the chromosome of NGR234.

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