Comparison of <i>Eco</i>SSB and <i>Mtu</i>SSB.

<p>(A) <i>Eco</i>SSB and <i>Mtu</i>SSB sequences were aligned with ClustalW program. Identical amino acid residues (*), very similar amino acid residues (:) and similar amino acid residues (.) are indicated. Secondary structural elements (α helix and β strands) are shown as per <i>Eco</i>SSB nomenclature <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0094669#pone.0094669-Raghunathan1" target="_blank">[17]</a>. Acidic amino acids in <i>Mtu</i>SSB L₄₅ region are highlighted in ‘red’. (B) DNA binding domains of <i>Eco</i>SSB and <i>Mtu</i>SSB tertiary structures were superposed using Pymole. Various secondary structural elements mentioned in Fig. 1A are indicated. L₄₅ loop in both the SSBs (connecting β45₁ and β45₂) are also indicated.