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. 2012 Dec 12;7(12):e51274. doi: 10.1371/journal.pone.0051274

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© 2012 Dueholm 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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Minimalistic curli repeats (X₆QXGX₂NX₁₀) are shown with arrows. Yellow arrows represent repeats within CsgA homologs, blue arrows repeats within CsgB homologs, and red arrows represent repeats in homologs, which cannot be reliably classified as either CsgA or CsgB homologs.