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1qt9

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Revision as of 08:02, 28 February 2018

OXIDIZED [2FE-2S] FERREDOXIN FROM ANABAENA PCC7119

Structural highlights

1qt9 is a 1 chain structure with sequence from Nostoc sp.. 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

[FER1_NOSSO] Ferredoxins are iron-sulfur proteins that transfer electrons in a wide variety of metabolic reactions.

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

The chemical sequence of the [2Fe-2S] ferredoxin from the cyanobacterium AnabaenaPCC7119 (Fd7119) and its high-resolution X-ray structures in the oxidized and reduced states have been determined. The Fd7119 sequence is identical to that of the ferredoxin from the PCC7120 strain (Fd7120). X-ray diffraction data were collected at 100 K with an oxidized trigonal Fd7119 crystal, at 1.3 A resolution, and with an orthorhombic crystal, previously reduced with dithionite and flash frozen under anaerobic conditions, at 1.17 A resolution. The two molecular models were determined by molecular replacement with the [2Fe-2S] ferredoxin from the strain PCC7120 (Rypniewski, W. R., Breiter, D. R., Benning, M. M., Wesenberg, G., Oh, B.-H., Markley, J. L., Rayment, I., and Holden, H. M. (1991) Biochemistry 30, 4126-4131.) The final R-factors are 0. 140 (for the reduced crystal) and 0.138 (for the oxidized crystal). The [2Fe-2S] cluster appears as a significantly distorted lozenge in the reduced and oxidized redox states. The major conformational difference between the two redox forms concerns the peptide bond linking Cys46 and Ser47 which points its carbonyl oxygen away from the [2Fe-2S] cluster ("CO out") in the reduced molecule and toward it ("CO in") in the oxidized one. The "CO out" conformation could be the signature of the reduction of the iron atom Fe1, which is close to the molecular surface. Superposition of the three crystallographically independent molecules shows that the putative recognition site with the physiological partner (FNR) involves charged, hydrophobic residues and invariant water molecules.

Refined X-ray structures of the oxidized, at 1.3 A, and reduced, at 1.17 A, [2Fe-2S] ferredoxin from the cyanobacterium Anabaena PCC7119 show redox-linked conformational changes.,Morales R, Charon MH, Hudry-Clergeon G, Petillot Y, Norager S, Medina M, Frey M Biochemistry. 1999 Nov 30;38(48):15764-73. PMID:10625442^[1]

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

References

↑ Morales R, Charon MH, Hudry-Clergeon G, Petillot Y, Norager S, Medina M, Frey M. Refined X-ray structures of the oxidized, at 1.3 A, and reduced, at 1.17 A, [2Fe-2S] ferredoxin from the cyanobacterium Anabaena PCC7119 show redox-linked conformational changes. Biochemistry. 1999 Nov 30;38(48):15764-73. PMID:10625442

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1qt9"

@@ Line 1: / Line 1: @@
 ==OXIDIZED [2FE-2S] FERREDOXIN FROM ANABAENA PCC7119==
 <StructureSection load='1qt9' size='340' side='right' caption='[[1qt9]], [[Resolution|resolution]] 1.30&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1qt9]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Nostoc_sp. Nostoc sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QT9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QT9 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</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=1qt9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qt9 OCA], [http://pdbe.org/1qt9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qt9 RCSB], [http://www.ebi.ac.uk/pdbsum/1qt9 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=1qt9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qt9 OCA], [http://pdbe.org/1qt9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qt9 RCSB], [http://www.ebi.ac.uk/pdbsum/1qt9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1qt9 ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 12: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qt/1qt9_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qt/1qt9_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1qt9

From Proteopedia

Revision as of 08:02, 28 February 2018

OXIDIZED [2FE-2S] FERREDOXIN FROM ANABAENA PCC7119

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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