1bcf

From Proteopedia

(Difference between revisions)

Revision as of 11:15, 22 November 2017

THE STRUCTURE OF A UNIQUE, TWO-FOLD SYMMETRIC, HAEM-BINDING SITE

Structural highlights

1bcf is a 12 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BFR_ECOLI] Iron-storage protein, whose ferroxidase center binds Fe(2+) ions, oxidizes them by dioxygen to Fe(3+), and participates in the subsequent Fe(3+) oxide mineral core formation within the central cavity of the protein complex. The mineralized iron core can contain as many as 2700 iron atoms/24-meric molecule.^[1] ^[2]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Bacterioferritin of Escherichia coli, also known as cytochrome b1, is a hollow, nearly spherical shell made up of 24 identical protein subunits and 12 haems. We have solved this structure in a tetragonal crystal form at 2.9 A resolution. We find that each haem is bound in a pocket formed by the interface between a pair of symmetry-related subunits. The quasi-twofold axis of the haem is closely aligned with the local twofold axis relating these subunits. The axial ligands of the haem are sulphurs of two equivalent methionyl residues (Met 52) from the symmetry-related subunits. A cluster of four water molecules is trapped in the gap between the upper edge of the haem and two extended protein loops which close off the haem from the outer aqueous environment. This is the first structure of a bis-methionine ligated haem-binding site and the first case of a twofold symmetric haem-binding site.

Structure of a unique twofold symmetric haem-binding site.,Frolow F, Kalb AJ, Yariv J Nat Struct Biol. 1994 Jul;1(7):453-60. PMID:7664064^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Yang X, Le Brun NE, Thomson AJ, Moore GR, Chasteen ND. The iron oxidation and hydrolysis chemistry of Escherichia coli bacterioferritin. Biochemistry. 2000 Apr 25;39(16):4915-23. PMID:10769150
↑ Baaghil S, Lewin A, Moore GR, Le Brun NE. Core formation in Escherichia coli bacterioferritin requires a functional ferroxidase center. Biochemistry. 2003 Dec 2;42(47):14047-56. PMID:14636073 doi:http://dx.doi.org/10.1021/bi035253u
↑ Frolow F, Kalb AJ, Yariv J. Structure of a unique twofold symmetric haem-binding site. Nat Struct Biol. 1994 Jul;1(7):453-60. PMID:7664064

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1bcf"

Categories: Bacillus coli migula 1895 | Frolow, F | Gilboa, A J.Kalb | Yariv, J | Iron storage and electron transport

@@ Line 1: / Line 1: @@
 ==THE STRUCTURE OF A UNIQUE, TWO-FOLD SYMMETRIC, HAEM-BINDING SITE==
 <StructureSection load='1bcf' size='340' side='right' caption='[[1bcf]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1bcf]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BCF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1BCF FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1bcf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bcf OCA], [http://pdbe.org/1bcf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1bcf RCSB], [http://www.ebi.ac.uk/pdbsum/1bcf PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1bcf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bcf OCA], [http://pdbe.org/1bcf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1bcf RCSB], [http://www.ebi.ac.uk/pdbsum/1bcf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1bcf ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 27: / Line 28: @@
 </div>
 <div class="pdbe-citations 1bcf" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Ferritin|Ferritin]]
 == References ==
 <references/>

1bcf

From Proteopedia

Revision as of 11:15, 22 November 2017

THE STRUCTURE OF A UNIQUE, TWO-FOLD SYMMETRIC, HAEM-BINDING SITE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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