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. 2008 Feb 22;190(9):3374–3380. doi: 10.1128/JB.02002-07

FIG. 1.

FIG. 1.

Distribution of EI, HPr, and EII domains in PTS-related proteins of P. putida. The diagrams show the types of modules and subregions distinctively found in the five proteins of the PTS of P. putida (39). The upper panel shows the domain organization of the three proteins that belong to the N-related PTS (PTSNtr). It includes PtsP (EIIANtr), with a GAF domain (137 amino acids) and an EI domain (561 amino acids), as well as the single-module proteins PtsO (NPr) having a single 83-amino-acid HPr domain and PtsN (EIIANtr) consisting of a unique 146-amino-acid EIIA moiety. The lower panel shows the domain structure of the two proteins that form the fructose-specific PTS of P. putida. This PTS includes the multiphosphoryl transfer protein (MTP) FruB having an EIIAFru domain (140 amino acids), an HPr domain (86 amino acids), and an EI domain (548 amino acids) and the bimodule fructose-specific permease FruA composed of an EIIB domain (83 amino acids) and an EIIC domain (340 amino acids). The identities of the proteins are indicated on the left.