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7dfr

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[[Image:7dfr.png|left|200px]]
 
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==CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE. THE NADP+ HOLOENZYME AND THE FOLATE(DOT)NADP+ TERNARY COMPLEX. SUBSTRATE BINDING AND A MODEL FOR THE TRANSITION STATE==
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The line below this paragraph, containing "STRUCTURE_7dfr", creates the "Structure Box" on the page.
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<StructureSection load='7dfr' size='340' side='right' caption='[[7dfr]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[7dfr]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. The October 2002 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Dihydrofolate Reductase'' by David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2002_10 10.2210/rcsb_pdb/mom_2002_10]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7DFR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=7DFR FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FOL:FOLIC+ACID'>FOL</scene>, <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</scene></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Dihydrofolate_reductase Dihydrofolate reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.5.1.3 1.5.1.3] </span></td></tr>
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{{STRUCTURE_7dfr| PDB=7dfr | SCENE= }}
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<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=7dfr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7dfr OCA], [http://pdbe.org/7dfr PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=7dfr RCSB], [http://www.ebi.ac.uk/pdbsum/7dfr PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=7dfr ProSAT]</span></td></tr>
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</table>
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== Function ==
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[[http://www.uniprot.org/uniprot/DYR_ECOLI DYR_ECOLI]] Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/df/7dfr_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=7dfr ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The crystal structure of dihydrofolate reductase (EC 1.5.1.3) from Escherichia coli has been solved as the binary complex with NADP+ (the holoenzyme) and as the ternary complex with NADP+ and folate. The Bragg law resolutions of the structures are 2.4 and 2.5 A, respectively. The new crystal forms are nonisomorphous with each other and with the methotrexate binary complex reported earlier [Bolin, J. T., Filman, D. J., Matthews, D. A., Hamlin, R. C., &amp; Kraut, J. (1982) J. Biol. Chem. 257, 13650-13662]. In general, NADP+ and folate binding conform to predictions, but the nicotinamide moiety of NADP+ is disordered in the holoenzyme and ordered in the ternary complex. A mobile loop (residues 16-20) involved in binding the nicotinamide is also disordered in the holoenzyme. We report a detailed analysis of the binding interactions for both ligands, paying special attention to several apparently strained interactions that may favor the transition state for hydride transfer. Hypothetical models are presented for the binding of 7,8-dihydrofolate in the Michaelis complex and for the transition-state complex.
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===CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE. THE NADP+ HOLOENZYME AND THE FOLATE(DOT)NADP+ TERNARY COMPLEX. SUBSTRATE BINDING AND A MODEL FOR THE TRANSITION STATE===
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Crystal structures of Escherichia coli dihydrofolate reductase: the NADP+ holoenzyme and the folate.NADP+ ternary complex. Substrate binding and a model for the transition state.,Bystroff C, Oatley SJ, Kraut J Biochemistry. 1990 Apr 3;29(13):3263-77. PMID:2185835<ref>PMID:2185835</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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The line below this paragraph, {{ABSTRACT_PUBMED_2185835}}, adds the Publication Abstract to the page
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<div class="pdbe-citations 7dfr" style="background-color:#fffaf0;"></div>
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(as it appears on PubMed at http://www.pubmed.gov), where 2185835 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_2185835}}
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Bacillus coli migula 1895]]
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[[7dfr]] is a 1 chain structure of [[Dihydrofolate reductase]] with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The October 2002 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Dihydrofolate Reductase'' by David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2002_10 10.2210/rcsb_pdb/mom_2002_10]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7DFR OCA].
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==See Also==
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*[[Dihydrofolate reductase]]
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==Reference==
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<ref group="xtra">PMID:2185835</ref><references group="xtra"/>
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[[Category: Dihydrofolate Reductase]]
[[Category: Dihydrofolate Reductase]]
[[Category: Dihydrofolate reductase]]
[[Category: Dihydrofolate reductase]]
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[[Category: Escherichia coli]]
 
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
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[[Category: Bystroff, C.]]
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[[Category: Bystroff, C]]
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[[Category: Kraut, J.]]
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[[Category: Kraut, J]]
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[[Category: Oatley, S J.]]
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[[Category: Oatley, S J]]
[[Category: Oxido-reductase]]
[[Category: Oxido-reductase]]
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[[Category: Oxidoreductase]]

Current revision

CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE. THE NADP+ HOLOENZYME AND THE FOLATE(DOT)NADP+ TERNARY COMPLEX. SUBSTRATE BINDING AND A MODEL FOR THE TRANSITION STATE

7dfr, resolution 2.50Å

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