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. 2011 Jun 14;6(6):e20585. doi: 10.1371/journal.pone.0020585

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Marr et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A Standard immunoblot analysis showing surface binding of the 104-kDa C1inh protein to whole bacteria incubated in serum; B Far-Western analysis testing for the interaction of C1inh with a ca. 95- to 100-kDa factor of B. pertussis. The left and right panels in A and B show the results with BP338Vag8⁻ (vag8::pEG7-Vag8) and BP338BipA⁻ (bipA::pTEN34), respectively. C Immunoblot probed for the BvgAS-activated autotransporter protein BrkA. D Immunoblot analysis showing surface binding of C1inh to wild type B. pertussis (BP338) and the BP338Vag8⁻ mutant complemented with pVag8. BP338Vag8⁻ complemented with control plasmids pBBR1MCS2 (empty vector) or pBrkA (vector with the brkA gene under control of P_cpn10) did not bind C1inh.