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. 2011 Jan 11;42(1):2. doi: 10.1186/1297-9716-42-2

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Copyright ©2011 Vilei et al; licensee BioMed Central Ltd.

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

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Neighbour joining tree of clostridial sialidases. The tree was constructed by ClustalW2 with gap open penalty of 10 and gap extension penalty of 0.05. The bar (0.10) represents substitutions per site. The following sialidase amino acid sequences were aligned: C. chauvoei (strain JF4135; this study), C. tertium (GenBank: CAA69951), C. sordellii (GenBank: AAB38298), C. septicum (GenBank: CAA44916), C. perfringens NanH (GenBank: P10481), C. perfringens NanI (GenBank: NP_561641) and C. perfringens NanJ (GenBank: NP_561469).