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. 2010 Sep 27;107(41):17745–17750. doi: 10.1073/pnas.1008053107

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Fig. 1. — The export apparatus is intimately associated with the NC. (A) Export apparatus components cofractionate with the NC. Protein complexes of purified S. Typhimurium inner membrane fractions were solubilized with n-dodecyl-β-d-maltopyranoside (DDM) and separated by 2D BN-PAGE. Indicated proteins were identified by LC-MS/MS or Western blotting. (B) The export apparatus interacts with the needle complex. DDM-solubilized inner membrane fraction proteins interacting with C-terminally FLAG-tagged InvA or SpaS^N258A were immunoprecipitated, separated by BN-PAGE, and identified by LC-MS/MS.