2HTN image
Deposition Date 2006-07-26
Release Date 2006-11-21
Last Version Date 2023-08-30
Entry Detail
PDB ID:
2HTN
Title:
E. coli bacterioferritin in its as-isolated form
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Resolution:
2.50 Å
R-Value Free:
0.18
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 21 3
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Bacterioferritin
Gene (Uniprot):bfr
Chain IDs:A, B, C, D, E, F, G, H
Chain Length:158
Number of Molecules:8
Biological Source:Escherichia coli
Primary Citation
Fortuitous structure determination of 'as-isolated' Escherichia coli bacterioferritin in a novel crystal form.
Acta Crystallogr.,Sect.F 62 1061 1066 (2006)
PMID: 17077480 DOI: 10.1107/S1744309106039583

Abstact

Escherichia coli bacterioferritin was serendipitously crystallized in a novel cubic crystal form and its structure could be determined to 2.5 A resolution despite a high degree of merohedral twinning. This is the first report of crystallographic data on 'as-isolated' E. coli bacterioferritin. The ferroxidase active site contains positive difference density consistent with two metal ions that had co-purified with the protein. X-ray fluorescence studies suggest that the metal composition is different from that of previous structures and is a mix of zinc and native iron ions. The ferroxidase-centre configuration displays a similar flexibility as previously noted for other bacterioferritins.

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Primary Citation of related structures