1qga: Difference between revisions
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==PEA FNR Y308W MUTANT IN COMPLEX WITH NADP+== | ==PEA FNR Y308W MUTANT IN COMPLEX WITH NADP+== | ||
<StructureSection load='1qga' size='340' side='right' caption='[[1qga]], [[Resolution|resolution]] 2.00Å' scene=''> | <StructureSection load='1qga' size='340' side='right'caption='[[1qga]], [[Resolution|resolution]] 2.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1qga]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1qga]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Pisum_sativum Pisum sativum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QGA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QGA FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> | ||
<tr id=' | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qga FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qga OCA], [https://pdbe.org/1qga PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qga RCSB], [https://www.ebi.ac.uk/pdbsum/1qga PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qga ProSAT]</span></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/FENR1_PEA FENR1_PEA] May play a key role in regulating the relative amounts of cyclic and non-cyclic electron flow to meet the demands of the plant for ATP and reducing power. | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qg/1qga_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/qg/1qga_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/ | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </jmolCheckbox> | ||
| Line 33: | Line 33: | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Aliverti | [[Category: Pisum sativum]] | ||
[[Category: Arakaki | [[Category: Aliverti A]] | ||
[[Category: Calcaterra | [[Category: Arakaki AK]] | ||
[[Category: Carrillo | [[Category: Calcaterra NB]] | ||
[[Category: Ceccarelli | [[Category: Carrillo N]] | ||
[[Category: Deng | [[Category: Ceccarelli EA]] | ||
[[Category: Karplus | [[Category: Deng Z]] | ||
[[Category: Orellano | [[Category: Karplus PA]] | ||
[[Category: Ottado | [[Category: Orellano EG]] | ||
[[Category: Zanetti | [[Category: Ottado J]] | ||
[[Category: Zanetti G]] | |||
Latest revision as of 12:40, 25 December 2024
PEA FNR Y308W MUTANT IN COMPLEX WITH NADP+PEA FNR Y308W MUTANT IN COMPLEX WITH NADP+
Structural highlights
FunctionFENR1_PEA May play a key role in regulating the relative amounts of cyclic and non-cyclic electron flow to meet the demands of the plant for ATP and reducing power. 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 PubMedThe flavoenzyme ferredoxin-NADP+ reductase (FNR) catalyzes the production of NADPH during photosynthesis. Whereas the structures of FNRs from spinach leaf and a cyanobacterium as well as many of their homologs have been solved, none of these studies has yielded a productive geometry of the flavin-nicotinamide interaction. Here, we show that this failure occurs because nicotinamide binding to wild type FNR involves the energetically unfavorable displacement of the C-terminal Tyr side chain. We used mutants of this residue (Tyr 308) of pea FNR to obtain the structures of productive NADP+ and NADPH complexes. These structures reveal a unique NADP+ binding mode in which the nicotinamide ring is not parallel to the flavin isoalloxazine ring, but lies against it at an angle of approximately 30 degrees, with the C4 atom 3 A from the flavin N5 atom. A productive NADP+ binding mode of ferredoxin-NADP + reductase revealed by protein engineering and crystallographic studies.,Deng Z, Aliverti A, Zanetti G, Arakaki AK, Ottado J, Orellano EG, Calcaterra NB, Ceccarelli EA, Carrillo N, Karplus PA Nat Struct Biol. 1999 Sep;6(9):847-53. PMID:10467097[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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