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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Phylogenetic tree of QueF proteins. The tree was rooted to Aquifex aeolicus QueF sequence (unimodular QueF with no Cys99). Numbers indicate the posterior probability value.