1fer: Difference between revisions
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|PDB= 1fer |SIZE=350|CAPTION= <scene name='initialview01'>1fer</scene>, resolution 2.3Å | |PDB= 1fer |SIZE=350|CAPTION= <scene name='initialview01'>1fer</scene>, resolution 2.3Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=F3S:FE3-S4+CLUSTER'>F3S</scene> | |LIGAND= <scene name='pdbligand=F3S:FE3-S4+CLUSTER'>F3S</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1fer FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fer OCA], [http://www.ebi.ac.uk/pdbsum/1fer PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1fer RCSB]</span> | |||
}} | }} | ||
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[[Category: Stout, G H.]] | [[Category: Stout, G H.]] | ||
[[Category: Turley, S.]] | [[Category: Turley, S.]] | ||
[[Category: electron transfer(iron-sulfur protein)]] | [[Category: electron transfer(iron-sulfur protein)]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:21:28 2008'' | ||
Revision as of 20:21, 30 March 2008
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| , resolution 2.3Å | |||||||
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| Ligands: | , | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE AT PH 6.5 OF FERREDOXIN I FROM AZOTOBACTER VINELANDII AT 2.3 ANGSTROMS RESOLUTION
OverviewOverview
Ferredoxin I from Azotobacter vinelandii (AvFdI) is an iron-sulfur protein composed of 106 amino acids, seven Fe atoms and eight inorganic S* atoms. A crystallographic redetermination of its structure showed the originally reported structure to be incorrect. We report here the crystal structure of AvFdI at pH 6.5. Extensive refinement has led to a final R value of 0.170 for all 6986 non-extinct reflections in the range 10-2.3 A using a solvent model which includes 98 discrete solvent atoms with occupancies between 0.3 and 1.0 and an average B value of 22.5 A(2). The first half of the peptide chain closely resembles that of the 55-residue ferredoxin from Peptococcus aerogenes (PaFd), while the remainder consists of three turns of helix and a series of loops which form a cap over part of the molecular core. Despite the similarities in structure and surroundings, the corresponding 4Fe4S* clusters in PaFd and AvFdI have strikingly different redox potentials; a possible explanation has been sought in the differing hydration models for the two molecules.
About this StructureAbout this Structure
1FER is a Single protein structure of sequence from Azotobacter vinelandii. Full crystallographic information is available from OCA.
ReferenceReference
Structure at pH 6.5 of ferredoxin I from Azotobacter vinelandii at 2.3 A resolution., Merritt EA, Stout GH, Turley S, Sieker LC, Jehsen LH, Orme-Johnson WH, Acta Crystallogr D Biol Crystallogr. 1993 Mar 1;49(Pt 2):272-81. PMID:15299532
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