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1fca
From Proteopedia
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|PDB= 1fca |SIZE=350|CAPTION= <scene name='initialview01'>1fca</scene>, resolution 1.8Å | |PDB= 1fca |SIZE=350|CAPTION= <scene name='initialview01'>1fca</scene>, resolution 1.8Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=SF4:IRON/SULFUR CLUSTER'>SF4</scene> | + | |LIGAND= <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=1fca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fca OCA], [http://www.ebi.ac.uk/pdbsum/1fca PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1fca RCSB]</span> | ||
}} | }} | ||
| Line 24: | Line 27: | ||
[[Category: Jesior, J C.]] | [[Category: Jesior, J C.]] | ||
[[Category: Tranqui, D.]] | [[Category: Tranqui, D.]] | ||
| - | [[Category: SF4]] | ||
[[Category: electron transport (cytochrome)]] | [[Category: electron transport (cytochrome)]] | ||
| - | ''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 20:20:06 2008'' |
Revision as of 17:20, 30 March 2008
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| , resolution 1.8Å | |||||||
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| Ligands: | |||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE OF THE FERREDOXIN FROM CLOSTRIDIUM ACIDURICI: MODEL AT 1.8 ANGSTROMS RESOLUTION
Overview
Ferredoxins (Fd) are electron-carrier proteins, the active sites of which are organized around clusters made of iron and inorganic sulfur. The Fd from Clostridium acidurici is 55 amino acids long and contains two [4Fe-4S] clusters. Crystals have been obtained in the space group P4(3)2(1)2, a = b = 34.441 (5), c = 74.778 (9) A. The structure was solved by molecular replacement using the Fd from Peptostreptcoccus asaccharolyticus as a search model, these two ferredoxins having 37 residues in common. Refinement using molecular-dynamics techniques was then initiated. Successive rounds of model building and refinement gave a structure that includes 45 water molecules with R = 15%. At this stage, the electron-density map clearly revealed discrepancies in the position of two amino acids in the published primary sequence. Refinement based on these modifications led to R = 14.3% for 3921 reflections up to 1.8 A, resolution. The geometry of the two clusters has been found to be in good agreement with that previously obtained at a lower resolution. Interactions of polypeptide chain with the [4Fe-4S] clusters, the cluster geometry as well as the hydrogen bonds involving S, Sgamma, N and water molecules are reported.
About this Structure
1FCA is a Single protein structure of sequence from Clostridium acidurici. Full crystallographic information is available from OCA.
Reference
Structure of the ferredoxin from Clostridium acidurici: model at 1.8 A resolution., TranQui D, Jesior JC, Acta Crystallogr D Biol Crystallogr. 1995 Mar 1;51(Pt 2):155-9. PMID:15299316
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