1SOF

Crystal structure of the azotobacter vinelandii bacterioferritin at 2.6 A resolution

Summary for 1SOF

• Entry DOI: 10.2210/pdb1sof/pdb
• Descriptor: Bacterioferritin, FE (II) ION, MAGNESIUM ION, ... (6 entities in total)
• Functional Keywords: bacterioferritin, active as 24-mer, four-helix bundle, electron transport
• Biological source: Azotobacter vinelandii
• Total number of polymer chains: 8
• Total formula weight: 148898.68

Authors

Liu, H.L.,Huang, J.F.,Bi, R.C. (deposition date: 2004-03-14, release date: 2005-04-05, Last modification date: 2023-10-25)

Primary citation

Liu, H.L.,Zhou, H.N.,Xing, W.M.,Zhao, J.F.,Li, S.X.,Huang, J.F.,Bi, R.C.
2.6 A resolution crystal structure of the bacterioferritin from Azotobacter vinelandii
Febs Lett., 573:93-98, 2004

PubMed Abstract: The crystal structure of the bacterioferritin from Azotobacter vinelandii has been determined at 2.6 A resolution. Both the low occupancy of one iron ion in the dinuclear iron center and the deviation of its adjacent residue His130 from the center suggest migration of the iron ion from the dinuclear iron site to the inner nucleation site. The concerted movement of His130 and Glu47 may admit a dynamic gating mechanism for shift of the oxidized iron ion. Ba2+ binding to the fourfold channel implicates that the channel bears Fe2+ conductivity and selectivity to provide a route for iron access to the inner cavity during core formation.

PubMed: 15327981
DOI: 10.1016/j.febslet.2004.07.054

Experimental method

X-RAY DIFFRACTION (2.6 Å)