BTL_1549 sensory box protein
     BTL_240 HAMP domain protein
     BTL_3326 his Kinase A domain protein
     BTL_4348 PAS fold family protein
     BTL_3521 his Kinase A domain protein

K07708 glnL; two-component system, NtrC family, nitrogen regulation sensor histidine kinase GlnL [EC:2.7.13.3] 
K13598 ntrY; two-component system, NtrC family, nitrogen regulation sensor histidine kinase NtrY [EC:2.7.13.3] 
K10125 dctB; two-component system, NtrC family, C4-dicarboxylate transport sensor histidine kinase DctB [EC:2.7.13.3] 
K02482 flgS; two-component system, NtrC family, sensor kinase [EC:2.7.13.3] 
K02482 flgS; two-component system, NtrC family, sensor kinase [EC:2.7.13.3]