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[[Image:1eyi.gif|left|200px]]
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{{STRUCTURE_1eyi|  PDB=1eyi  |  SCENE=  }}
'''FRUCTOSE-1,6-BISPHOSPHATASE COMPLEX WITH MAGNESIUM, FRUCTOSE-6-PHOSPHATE AND PHOSPHATE (R-STATE)'''


==FRUCTOSE-1,6-BISPHOSPHATASE COMPLEX WITH MAGNESIUM, FRUCTOSE-6-PHOSPHATE AND PHOSPHATE (R-STATE)==
<StructureSection load='1eyi' size='340' side='right'caption='[[1eyi]], [[Resolution|resolution]] 2.32&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1eyi]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EYI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EYI FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.32&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=F6P:FRUCTOSE-6-PHOSPHATE'>F6P</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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=1eyi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1eyi OCA], [https://pdbe.org/1eyi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1eyi RCSB], [https://www.ebi.ac.uk/pdbsum/1eyi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1eyi ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/F16P1_PIG F16P1_PIG]
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ey/1eyi_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1eyi ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Crystal structures of metal-product complexes of fructose 1, 6-bisphosphatase (FBPase) reveal competition between AMP and divalent cations. In the presence of AMP, the Zn(2+)-product and Mg(2+)-product complexes have a divalent cation present only at one of three metal binding sites (site 1). The enzyme is in the T-state conformation with a disordered loop of residues 52-72 (loop 52-72). In the absence of AMP, the enzyme crystallizes in the R-state conformation, with loop 52-72 associated with the active site. In structures without AMP, three metal-binding sites are occupied by Zn(2+) and two of three metal sites (sites 1 and 2) by Mg(2+). Evidently, the association of AMP with FBPase disorders loop 52-72, the consequence of which is the release of cations from two of three metal binding sites. In the Mg(2+) complexes (but not the Zn(2+) complexes), the 1-OH group of fructose 6-phosphate (F6P) coordinates to the metal at site 1 and is oriented for a nucleophilic attack on the bound phosphate molecule. A mechanism is presented for the forward reaction, in which Asp74 and Glu98 together generate a hydroxide anion coordinated to the Mg(2+) at site 2, which then displaces F6P. Development of negative charge on the 1-oxygen of F6P is stabilized by its coordination to the Mg(2+) at site 1.


==Overview==
Crystal structures of fructose 1,6-bisphosphatase: mechanism of catalysis and allosteric inhibition revealed in product complexes.,Choe JY, Fromm HJ, Honzatko RB Biochemistry. 2000 Jul 25;39(29):8565-74. PMID:10913263<ref>PMID:10913263</ref>
Crystal structures of metal-product complexes of fructose 1, 6-bisphosphatase (FBPase) reveal competition between AMP and divalent cations. In the presence of AMP, the Zn(2+)-product and Mg(2+)-product complexes have a divalent cation present only at one of three metal binding sites (site 1). The enzyme is in the T-state conformation with a disordered loop of residues 52-72 (loop 52-72). In the absence of AMP, the enzyme crystallizes in the R-state conformation, with loop 52-72 associated with the active site. In structures without AMP, three metal-binding sites are occupied by Zn(2+) and two of three metal sites (sites 1 and 2) by Mg(2+). Evidently, the association of AMP with FBPase disorders loop 52-72, the consequence of which is the release of cations from two of three metal binding sites. In the Mg(2+) complexes (but not the Zn(2+) complexes), the 1-OH group of fructose 6-phosphate (F6P) coordinates to the metal at site 1 and is oriented for a nucleophilic attack on the bound phosphate molecule. A mechanism is presented for the forward reaction, in which Asp74 and Glu98 together generate a hydroxide anion coordinated to the Mg(2+) at site 2, which then displaces F6P. Development of negative charge on the 1-oxygen of F6P is stabilized by its coordination to the Mg(2+) at site 1.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1EYI is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EYI OCA].
</div>
<div class="pdbe-citations 1eyi" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Crystal structures of fructose 1,6-bisphosphatase: mechanism of catalysis and allosteric inhibition revealed in product complexes., Choe JY, Fromm HJ, Honzatko RB, Biochemistry. 2000 Jul 25;39(29):8565-74. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10913263 10913263]
*[[Fructose-1%2C6-bisphosphatase 3D structures|Fructose-1%2C6-bisphosphatase 3D structures]]
[[Category: Fructose-bisphosphatase]]
== References ==
[[Category: Single protein]]
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Sus scrofa]]
[[Category: Sus scrofa]]
[[Category: Choe, J.]]
[[Category: Choe J]]
[[Category: Honzatko, R B.]]
[[Category: Honzatko RB]]
[[Category: Allosteric enzyme]]
[[Category: Bisphosphatase]]
[[Category: Gluconeogenesis]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 15:40:24 2008''
Retrieved from "https://proteopedia.org/1eyi"