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. 2007 Mar 19;35(7):2247–2256. doi: 10.1093/nar/gkm077

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© 2007 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — State of association of H.pylori HP-NAP at different pH values, monitored by analytical ultracentrifugation, agarose gel electrophoresis and AFM. Panel A: pH 6.5; panel B: pH 8.5. Each panel shows (from left to right): the sedimentation coefficient distribution c(S) as a function of S, agarose gel electrophoresis of 3 μM (lane 1) and 4 μM HP-NAP (lane 2) and AFM images. In these, the white dots represent single HP-NAP dodecamers as indicated by the lateral and vertical dimensions. Buffers: 0.04 M Tris-acetate or BisTris-acetate containing 3 mM MgCl₂. Image scan size 2 μm.