1gjr: Difference between revisions
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[[Image:1gjr.jpg|left|200px]] | [[Image:1gjr.jpg|left|200px]] | ||
'''FERREDOXIN-NADP+ REDUCTASE COMPLEXED WITH NADP+ BY COCRYSTALLIZATION''' | {{Structure | ||
|PDB= 1gjr |SIZE=350|CAPTION= <scene name='initialview01'>1gjr</scene>, resolution 2.1Å | |||
|SITE= <scene name='pdbsite=FAD:Nap+Binding+Site+For+Chain+A'>FAD</scene> | |||
|LIGAND= <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene> and <scene name='pdbligand=NAP:NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE'>NAP</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Ferredoxin--NADP(+)_reductase Ferredoxin--NADP(+) reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.18.1.2 1.18.1.2] | |||
|GENE= | |||
}} | |||
'''FERREDOXIN-NADP+ REDUCTASE COMPLEXED WITH NADP+ BY COCRYSTALLIZATION''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1GJR is a [ | 1GJR is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Anabaena_sp. Anabaena sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GJR OCA]. | ||
==Reference== | ==Reference== | ||
Mechanism of coenzyme recognition and binding revealed by crystal structure analysis of ferredoxin-NADP+ reductase complexed with NADP+., Hermoso JA, Mayoral T, Faro M, Gomez-Moreno C, Sanz-Aparicio J, Medina M, J Mol Biol. 2002 Jun 21;319(5):1133-42. PMID:[http:// | Mechanism of coenzyme recognition and binding revealed by crystal structure analysis of ferredoxin-NADP+ reductase complexed with NADP+., Hermoso JA, Mayoral T, Faro M, Gomez-Moreno C, Sanz-Aparicio J, Medina M, J Mol Biol. 2002 Jun 21;319(5):1133-42. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12079352 12079352] | ||
[[Category: Anabaena sp.]] | [[Category: Anabaena sp.]] | ||
[[Category: Ferredoxin--NADP(+) reductase]] | [[Category: Ferredoxin--NADP(+) reductase]] | ||
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[[Category: oxidoreductase]] | [[Category: oxidoreductase]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:24:05 2008'' | ||
Revision as of 12:24, 20 March 2008
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| , resolution 2.1Å | |||||||
|---|---|---|---|---|---|---|---|
| Sites: | |||||||
| Ligands: | and | ||||||
| Activity: | Ferredoxin--NADP(+) reductase, with EC number 1.18.1.2 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
FERREDOXIN-NADP+ REDUCTASE COMPLEXED WITH NADP+ BY COCRYSTALLIZATION
OverviewOverview
The flavoenzyme ferredoxin-NADP+ reductase (FNR) catalyses the production of NADPH in photosynthesis. The three-dimensional structure of FNR presents two distinct domains, one for binding of the FAD prosthetic group and the other for NADP+ binding. In spite of extensive experiments and different crystallographic approaches, many aspects about how the NADP+ substrate binds to FNR and how the hydride ion is transferred from FAD to NADP+ remain unclear. The structure of an FNR:NADP+ complex from Anabaena has been determined by X-ray diffraction analysis of the cocrystallised units to 2.1 A resolution. Structural perturbation of FNR induced by complex formation produces a narrower cavity in which the 2'-phospho-AMP and pyrophosphate portions of the NADP+ are perfectly bound. In addition, the nicotinamide mononucleotide moiety is placed in a new pocket created near the FAD cofactor with the ribose being in a tight conformation. The crystal structure of this FNR:NADP+ complex obtained by cocrystallisation displays NADP+ in an unusual conformation and can be considered as an intermediate state in the process of coenzyme recognition and binding. Structural analysis and comparison with previously reported complexes allow us to postulate a mechanism which would permit efficient hydride transfer to occur. Besides, this structure gives new insights into the postulated formation of the ferredoxin:FNR:NADP+ ternary complex by prediction of new intermolecular interactions, which could only exist after FNR:NADP+ complex formation. Finally, structural comparison with the members of the broad FNR structural family also provides an explanation for the high specificity exhibited by FNR for NADP+/H versus NAD+/H.
About this StructureAbout this Structure
1GJR is a Single protein structure of sequence from Anabaena sp.. Full crystallographic information is available from OCA.
ReferenceReference
Mechanism of coenzyme recognition and binding revealed by crystal structure analysis of ferredoxin-NADP+ reductase complexed with NADP+., Hermoso JA, Mayoral T, Faro M, Gomez-Moreno C, Sanz-Aparicio J, Medina M, J Mol Biol. 2002 Jun 21;319(5):1133-42. PMID:12079352
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