Figure 4

Osmotolerance mechanisms in G. diazotrophicus. Osmotolerance mechanisms in G. diazotrophicus. (1) Sensor protein kdpD (GDI1564). (2) Transcriptional regulatory protein kdpE (GDI1565). (3) Potassium ABC transporter (kdpABC transporter; GDI1566-1568). (4) Glutathione-regulated system protein kefB (GDI0899) and (5) kefC (GDI2585). (6) Proline/betaine transporter (GDI2530). (7) Dpp ABC transporters for di- and tripeptides (GDI0246-GDI0250, GDI0454-GDI0458 and GDI3540-GDI3544). (8) Transporter dtpT, (GDI3819 and GDI0829). (9) Oligopeptide transporter (Opt; GDI3108). (10) Sensor kinase EnVZ (GDI3087). (11) OmpR (GDI3088). (12) Large Conductance MS channel mscL (GDI1732). (13) Small conductance MS channel, mscS, (GDI0793, GDI1149, GDI1789, and GDI3802). (14) glpRDFK (GDI1751-1754). (15) glpDKF (GDI0262, GDI0266, and GDI0267). (16) otsA GDI0917. (17) otsB GDI0916). (18) Periplasmic trehalase (treA GDI1341). The function of the proteins was verified by BLAST and motif searches of the corresponding CDS against public databases.