1iay

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[[Image:1iay.jpg|left|200px]]
 
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==CRYSTAL STRUCTURE OF ACC SYNTHASE COMPLEXED WITH COFACTOR PLP AND INHIBITOR AVG==
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The line below this paragraph, containing "STRUCTURE_1iay", creates the "Structure Box" on the page.
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<StructureSection load='1iay' size='340' side='right'caption='[[1iay]], [[Resolution|resolution]] 2.70&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'>[[1iay]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Solanum_lycopersicum Solanum lycopersicum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IAY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IAY FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AVG:2-AMINO-4-(2-AMINO-ETHOXY)-BUTYRIC+ACID'>AVG</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>
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{{STRUCTURE_1iay| PDB=1iay | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1iay FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1iay OCA], [https://pdbe.org/1iay PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1iay RCSB], [https://www.ebi.ac.uk/pdbsum/1iay PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1iay ProSAT]</span></td></tr>
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</table>
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'''CRYSTAL STRUCTURE OF ACC SYNTHASE COMPLEXED WITH COFACTOR PLP AND INHIBITOR AVG'''
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== Function ==
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[https://www.uniprot.org/uniprot/1A12_SOLLC 1A12_SOLLC] 1-aminocyclopropane-1-carboxylate synthase (ACS) enzymes catalyze the conversion of S-adenosyl-L-methionine (SAM) into 1-aminocyclopropane-1-carboxylate (ACC), a direct precursor of ethylene.
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== Evolutionary Conservation ==
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==Overview==
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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/ia/1iay_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1iay 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 ==
The structures of tomato 1-aminocyclopropane-1-carboxylate synthase (ACS) in complex with either cofactor pyridoxal-5'-phosphate (PLP) or both PLP and inhibitor aminoethoxyvinylglycine have been determined by x-ray crystallography. The structures showed good conservation of the catalytic residues, suggesting a similar catalytic mechanism for ACS and other PLP-dependent enzymes. However, the proximity of Tyr152 to the C-gamma-S bond of model substrate S-adenosylmethionine implies its critical role in the catalysis. The concerted accomplishment of catalysis by cofactor PLP and a protein residue, as proposed on the basis of the ACS structures in this paper, may represent a general scheme for the diversity of PLP-dependent catalyses. PLP-dependent enzymes have been categorized into four types of folds. A structural comparison revealed that a core fragment of ACS in fold type I is superimposable over tryptophan synthase beta subunit in fold type II and mouse ornithine decarboxylase in fold type III, thus suggesting a divergent evolution of PLP-dependent enzymes.
The structures of tomato 1-aminocyclopropane-1-carboxylate synthase (ACS) in complex with either cofactor pyridoxal-5'-phosphate (PLP) or both PLP and inhibitor aminoethoxyvinylglycine have been determined by x-ray crystallography. The structures showed good conservation of the catalytic residues, suggesting a similar catalytic mechanism for ACS and other PLP-dependent enzymes. However, the proximity of Tyr152 to the C-gamma-S bond of model substrate S-adenosylmethionine implies its critical role in the catalysis. The concerted accomplishment of catalysis by cofactor PLP and a protein residue, as proposed on the basis of the ACS structures in this paper, may represent a general scheme for the diversity of PLP-dependent catalyses. PLP-dependent enzymes have been categorized into four types of folds. A structural comparison revealed that a core fragment of ACS in fold type I is superimposable over tryptophan synthase beta subunit in fold type II and mouse ornithine decarboxylase in fold type III, thus suggesting a divergent evolution of PLP-dependent enzymes.
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==About this Structure==
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Crystal structures of 1-aminocyclopropane-1-carboxylate (ACC) synthase in complex with aminoethoxyvinylglycine and pyridoxal-5'-phosphate provide new insight into catalytic mechanisms.,Huai Q, Xia Y, Chen Y, Callahan B, Li N, Ke H J Biol Chem. 2001 Oct 12;276(41):38210-6. Epub 2001 Jun 28. PMID:11431475<ref>PMID:11431475</ref>
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1IAY is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Solanum_lycopersicum Solanum lycopersicum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IAY OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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Crystal structures of 1-aminocyclopropane-1-carboxylate (ACC) synthase in complex with aminoethoxyvinylglycine and pyridoxal-5'-phosphate provide new insight into catalytic mechanisms., Huai Q, Xia Y, Chen Y, Callahan B, Li N, Ke H, J Biol Chem. 2001 Oct 12;276(41):38210-6. Epub 2001 Jun 28. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11431475 11431475]
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</div>
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[[Category: 1-aminocyclopropane-1-carboxylate synthase]]
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<div class="pdbe-citations 1iay" style="background-color:#fffaf0;"></div>
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[[Category: Single protein]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Solanum lycopersicum]]
[[Category: Solanum lycopersicum]]
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[[Category: Callahan, B.]]
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[[Category: Callahan B]]
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[[Category: Chen, Y.]]
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[[Category: Chen Y]]
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[[Category: Huai, Q.]]
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[[Category: Huai Q]]
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[[Category: Ke, H.]]
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[[Category: Ke H]]
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[[Category: Li, N.]]
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[[Category: Li N]]
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[[Category: Xia, Y.]]
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[[Category: Xia Y]]
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[[Category: Protein-cofactor-inhibitor complex]]
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[[Category: V6-dependent enzyme]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 19:47:21 2008''
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CRYSTAL STRUCTURE OF ACC SYNTHASE COMPLEXED WITH COFACTOR PLP AND INHIBITOR AVG

PDB ID 1iay

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