Structure of a monoclinic crystal from of cyctochrome b1 (Bacterioferritin) from E. coli.Dautant, A., Meyer, J.B., Yariv, J., Precigoux, G., Sweet, R.M., Kalb, A.J., Frolow, F.
(1998) Acta Crystallogr.,Sect.D 54: 16-24
- PubMed: 9867433
- PubMed Abstract:
- Amino Acid Sequence of the Bacterioferritin (Cytochrome B1) of Escherichia Coli-K12
Andrews, S.C.,Smith, J.M.,Guest, J.R.,Harrison, P.M.
(1989) Biochem.Biophys.Res.Commun. 158: 489
- The Identity of Bacterioferritin and Cytochrome B1
(1983) Biochem.J. 211: 527
- Molecular Size and Symmetry of the Bacterioferritin of Escherichia Coli. X-Ray Crystallographic Characterization of Four Crystal Forms
Smith, J.M.,Ford, G.C.,Harrison, P.M.,Yariv, J.,Kalb, A.J.
(1989) J.Mol.Biol. 205: 465
- Structure of a Unique Twofold Symmetric Haem-Binding Site
Frolow, F.,Kalb, A.J.,Yariv, J.
(1994) Nat.Struct.Mol.Biol. 1: 453
- A Crystallographic Study of Haem Binding to Ferritin
Precigoux, G.,Yariv, J.,Gallois, B.,Dautant, A.,Courseille, C.,Langlois D'Estaintot, B.
(1994) Acta Crystallogr.,Sect.D 50: 739
Crystals of E. coli cytochrome b1, alias bacterioferritin, were grown fr om a low ionic strength solution. The resulting monoclniic P21 structure was solved by molecular replacement and refined using noncrystallographi c symmetries applied to the fun ...
Crystals of E. coli cytochrome b1, alias bacterioferritin, were grown fr om a low ionic strength solution. The resulting monoclniic P21 structure was solved by molecular replacement and refined using noncrystallographi c symmetries applied to the fundamental unit, consisting of two protein subunits and a single haem. From the Patterson self-rotation results it was shown that the asymmetric unit of the monoclinic crystal consists of 12 such dimers and corresponds to a complete, nearly spherical, molecule of bacterioferritin (M4 = 450 kDa) of 432 point-group symmetry. It is thus the most symmetrical cytochrome. As previously determined for the tetragonal form, the haem is located in a special position on a local twofold axis of the dimer. A bimetal centre is also observed within the four-helix bundle of each monomer; a metal-binding site is located on the fourfold axis.
Unité Biophysique Structurale, ERS133 CNRS, Université de Bordeaux 1, France.