Histidine phosphocarrier protein, mol. model

  • T.Blundell & N Campillo
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Histidine phosphocarrier protein, mol. model. T.Blundell & N Campillo. CC0 1.0 Universal. Source: Wellcome Collection.

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Molecular model of histidine phospho- carrier protein HPR (pdb code: 1ptf)(ribbon diagram, cylinders are alpha helices, His- 15 shown as model). HPR is part of the phospho-enolpyruvate- dependent sugar phospho-transferase system (PTS), a major carbohydrate active transport system moving certain hexoses across the cytoplasmic membrane of bacteria and mycoplasmas. The His-15 at the active site of HPR accepts a multi-enzyme system (Enzyme I) and transfers it to various sugar-specific PTS permeases.

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