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SAXS. A fit of the crystal structure of T. maritima ferritin (PDB entry 1vlg) into the surface envelope of Mtb BfrB confirms the conserved hollow spherical topology of a ferritin. The overlay with the electron-density envelope was created using CHIMERA. The envelope is calculated from an average of 16 GASBOR runs with P1 symmetry and 4000 residues.
