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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Trends Biochem Sci. 2013 Sep 19;38(10):10.1016/j.tibs.2013.08.003. doi: 10.1016/j.tibs.2013.08.003

Fig. 1.

Fig. 1

Summary of the PTS signal transduction pathway. (a) The first two steps are common to all branches of the pathway. Thereafter the pathway splits into four sugar-specific classes: glucose, mannitol, mannose and lactose/chitobiose. (b) Ribbon diagrams of the structures of the nine cytoplasmic complexes of the E. coli PTS. EIN-HPr [42] (shown in panel A); IIAGlc-HPr [47]; IIAMtl-HPr [45]; IIAMan-HPr[48]; IIAChb-HPr [49]; IIAGlc-IIBGlc [19]; IIAMtl-IIBMtl [50]; IIAMan-IIBMan [20]; IIAChb-IIBChb [51].