TABLE 4.

Summary of the 187 regulatory proteins in N. multiformis^a

Category	No. of genes
Transcription/elongation/termination factors	98
Sigma factors	8
Anti/anti-anti-sigma factors	6
Termination/antitermination factor	4
Elongation factors	3
Transcription factors	77
Signal transduction proteins	89
Chemotaxis signal transduction proteins	6
Chemotaxis sensory transducers (receptors)	1
Other chemotaxis signal transduction proteins	5
Nonchemotaxis signal transduction	83
Signal transduction histidine kinases	23
Cyclic nucleotide signal transduction	21
PTS NTR regulatorb	2
Miscellaneous	37

^aA detailed listing is available in Table S1 in the supplemental material. Associations and details of individual sensory transduction and regulatory response systems are available in Table S2 in the supplemental material.

^bPTS NTR regulator, phosphotransferase system nitrogen regulator.