NMR derived structure of mBS.

<p>A) Bundle of the best 10 structures of mBS calculated out of 2252 distance constraints (pdb ID code 2lfj); B) protection factors mapped on mBS structure with the following colour code: residues with a P>1×10⁵ in red, the one with 10×10³5 in orange and the one with P<10×10³ in yellow. Residues that couldn't be analyzed are shown in grey.