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Archaea ancient families

Secondary transporters are ancient molecular machines, common today in bacteria and archaea as well as in eukaryotes. For example, approximately 160 (of approximately 4000) proteins encoded by the E. coli genome appear to be secondary transporters. Sequence comparison and hydropathy analysis suggest that members of the largest family have 12 transmemhrane helices that appear to have arisen by duplication and fusion of a membrane protein with 6 transmemhrane helices. Included in this family is the lactose permease of E. coli. This symporter uses the H+ gradient... [Pg.537]

See other pages where Archaea ancient families is mentioned: [Pg.222]    [Pg.144]    [Pg.360]    [Pg.187]    [Pg.144]    [Pg.352]    [Pg.304]    [Pg.505]    [Pg.593]    [Pg.376]    [Pg.119]    [Pg.8]   
See also in sourсe #XX -- [ Pg.217 , Pg.218 , Pg.219 , Pg.220 , Pg.221 ]



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Ancient

Archaea

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