Table 3.
Groups of known LuxR solos.
| Group Known LuxR solo/LuxRI* | Genomic context of LuxR solo | Bacterial species | Homology, Invariant amino acids changed, Reference/(s) |
|---|---|---|---|
| SdiA (S. typhimurium and E. coli) | yecC, ABC transporter – sdiA– yecF, Uncharacterized protein (C) – sirA, Invasion response regulator – uvrC, UvrABC system protein C | Enterobacter sp., Klebsiella sp., Cronobacter sp., Escherichia sp., Yokenella sp., Citrobacter sp., Salmonella sp., Shimwellia sp. | 66–82% |
| ExpRI (Erwinia), PhzRI (Pantoea) | None | ||
| Ahmer et al., 1998; Kanamaru et al., 2000; Michael et al., 2001; Sabag-Daigle and Ahmer, 2012 | |||
| QscR (P. aeruginosa) | Desaturase (C) – qscR– phzA, phenazine biosynthesis protein A | P. aeruginosa | 97–100% |
| None | |||
| Chugani et al., 2001; Oinuma and Greenberg, 2011 | |||
| XccR (X. campestris), OryR (X. oryzae), PsoR (P. protegens), NesR (S. meliloti) | pip, proline imino peptidase/tra, peptide transporter (C) – xccR/oryR/psoR – pip, proline imino peptidase/hp, hypothetical protein | Pseudomonas sp., Rhizobium sp., Xanthomonas sp., Klebsiella sp., Rhodobacter sp., Agrobacterium sp., Mesorhizobium sp., Citreicella sp., Rahnella sp., Yersinia sp., Brennaria sp., Serratia sp. | 43–90% |
| W57M, Y61W | |||
| Zhang et al., 2007; Ferluga et al., 2007; Patankar and Gonzalez, 2009a; Subramoni et al., 2011 | |||
| ExpR (S. melilotii), AviR (A. vitis) | chvA, glucan exporter ATP-binding protein (C) – expR – pyc, pyruvate carboxylase | Agrobacterium sp., Ensifer sp., Rhizobium sp., Shinella sp., Sinorhizobium sp., Hoeflea sp. | 40–93% |
| None | |||
| Pellock et al., 2002; Zheng et al., 2003; Gao et al., 2014 | |||
| PpoR (P. putida) | fprB, flavodoxin reductase (C) – ppoR – rlmG, 16S RNA, methylase RsmC | P. putida, P. fluorescens, P. synxantha, P. moraviensis, P. brassicacearum, P. plecoglossicida, P. entomophila, P. mosselii | 40–79% |
| None | |||
| Subramoni and Venturi, 2009b; Fernandez-Pinar et al., 2011 | |||
| CepR2 (B. cenocepacia) | araC, AraC family transcriptional regulator – cepR2 – geneX, any gene product (C) | Burkholderia sp., Variovorax sp., Caulobacter sp. | 30–94% |
| W85A, G113N, E178Q | |||
| (only some proteins) Malott et al., 2009; Ryan et al., 2013 | |||
| VjbR (B. melitensis) | hp, hypothetical protein – vjbR – tetR, TetR family transcriptional regulator (C) | Brucella sp., Ochrobactrum sp., Phyllobacterium sp. | 47–88% |
| W85I/V, G113F | |||
| Delrue et al., 2005; Uzureau et al., 2010 | |||
| BlxR (B. melitensis) | ms, Methionine synthase – blxR – at, Amino transferase | Brucella sp., Ochrobactrum sp. | 78–94% |
| None | |||
| Rambow-Larsen et al., 2008 | |||
| AvhR (A. vitis) | Calcium binding protein (C) – avhR – nrt, nucleotide binding ABC transporter | Agrobacterium sp. | 56–67% |
| W57F, D70S, W85R | |||
| Hao et al., 2005 | |||
| BisR (R. leguminosarum) | trbI, conjugal transfer protein TrbI – bisR – traR, Conjugal transfer regulator TraR | Rhizobium sp. | 59–87% |
| None | |||
| Wilkinson et al., 2002; Danino et al., 2003 | |||
| CarR (S. marcescens) | geneX, any gene product – carR – carA, carbapenem biosynthesis protein | Serratia sp. | 59–62% |
| W57C | |||
| Cox et al., 1998; Poulter et al., 2011 |
(C)-Gene in the complementary strand.
*
indicates presence of LuxRI in a similar genomic context. Bold values indicate LuxR solos.