Phylogenetic analysis by neighbor-joining of putative
two-component open reading frames (ORFs) from histidine kinase
VI groups ahk40–43. Group ahk40
= MaceMA3066, MmazMM0328, AfulAF1040 and Mbur_
401647520; group ahk41 = MaceMA0014, MmazMM1325
and MbarA_ 0984;group ahk42 =
PAB1332, PH0484, Tkod_610170420/30 and MmarMMP0927; and
group ahk43 = HaloVNG0971G, HmarrnAC2205,
NphaNP2172A and Mhun_ 401793120. The bacterial ORFs are
CtetaniE17170, TmaritimaMSB_824070 and HpyloriHP0392.Abbreviations: CtetaniE17170 = C.
tetaniE88_1817170; T. maritima =
TmaritimaMSB_824070; and H. pylori =
HpyloriHP0392.