Table 3.

Genes comprising quorum-regulated processes (i.e., virulence, biofilm formation, motility, surface, and outer membrane-associated functions)

Gene or B numberGene product and/or functionaInduction ratio (fold)
hhaHemolysin expression-modulating protein +11.1
wzbProbable protein-tyrosine-phosphatase +6.2
ompGOuter membrane porin protein +5.1
smpASmall membrane protein A +4.5
yadKPutative fimbrial protein+3.8
rcsBPositive response regulator for colanic capsule biosynthesis (sensor, RcsC) +3.5
yadNPutative fimbrial-like protein +3.5
crlTranscriptional regulator of crypticcsgA gene for curli surface fibers +3.5
rfaJUDP-d-glucose:(galactosyl)lipopolysaccharide glucosyltransferase +3.4
rnkRegulator of nucleoside diphosphate kinase +3.1
motBEnables flagellar motor rotation, linking torque machinery to cell wall+3.1
b1502Putative adhesin; similar to FimH protein +3.0
tapMethyl-accepting chemotaxis protein IV, peptide sensor receptor +2.9
pstCHigh-affinity phosphate-specific transport system, cytoplasmic membrane component +2.8
yehAPutative type 1 fimbrial protein +2.7
rfaYLipopolysaccharide core biosynthesis +2.5
rfaDADP-l-glycero-d-mannoheptose-6-epimerase−2.7
uhpTHexose phosphate transport protein−2.7
cheWPositive regulator of CheA protein activity −2.7
b1629Putative membrane protein−2.8
evgSPutative sensor for regulator EvgA and homologous to B. pertussis bvgS−2.8
fliPFlagellar biosynthesis −2.9
nlpCLipoprotein −2.9
flgNProtein of flagellar biosynthesis −3.7
  • a Genome information is from Blattner et al. (9). Bold-faced genes exist within known operons