2iaa

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(New page: 200px<br /><applet load="2iaa" size="450" color="white" frame="true" align="right" spinBox="true" caption="2iaa, resolution 1.95&Aring;" /> '''Crystal Structure of...)
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[[Image:2iaa.gif|left|200px]]<br /><applet load="2iaa" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="2iaa, resolution 1.95&Aring;" />
 
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'''Crystal Structure of an Electron Transfer Complex Between Aromatic Amine Dephydrogenase and Azurin from Alcaligenes Faecalis (Form 2)'''<br />
 
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==Overview==
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==Crystal Structure of an Electron Transfer Complex Between Aromatic Amine Dephydrogenase and Azurin from Alcaligenes Faecalis (Form 2)==
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The crystal structure of an electron transfer complex of aromatic amine, dehydrogenase (AADH) and azurin is presented. Electrons are transferred, from the tryptophan tryptophylquinone (TTQ) cofactor of AADH to the type I, copper of the cupredoxin azurin. This structure is compared with the, complex of the TTQ-containing methylamine dehydrogenase (MADH) and the, cupredoxin amicyanin. Despite significant similarities between the two, quinoproteins and the two cupredoxins, each is specific for its respective, partner and the ionic strength dependence and magnitude of the binding, constant for each complex are quite different. The AADH-azurin interface, is largely hydrophobic, covering approximately 500 A(2) of surface on each, molecule, with one direct hydrogen bond linking them. The closest distance, from TTQ to copper is 12.6 A compared with a distance of 9.3 A in the, MADH-amicyanin complex. When the MADH-amicyanin complex is aligned with, the AADH-azurin complex, the amicyanin lies on top of the azurin but is, oriented quite differently. Although the copper atoms differ in position, by approximately 4.7 A, the amicyanin bound to MADH appears to be rotated, approximately 90 degrees from its aligned position with azurin. Comparison, of the structures of the two complexes identifies features of the, interface that dictate the specificity of the protein-protein interaction, and determine the rate of interprotein electron transfer.
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<StructureSection load='2iaa' size='340' side='right'caption='[[2iaa]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2iaa]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Alcaligenes_faecalis Alcaligenes faecalis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IAA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IAA 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]] 1.95&#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=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=TRQ:2-AMINO-3-(6,7-DIOXO-6,7-DIHYDRO-1H-INDOL-3-YL)-PROPIONIC+ACID'>TRQ</scene></td></tr>
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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=2iaa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2iaa OCA], [https://pdbe.org/2iaa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2iaa RCSB], [https://www.ebi.ac.uk/pdbsum/2iaa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2iaa ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/AAUB_ALCFA AAUB_ALCFA] Oxidizes primary aromatic amines and, more slowly, some long-chain aliphatic amines, but not methylamine or ethylamine. Uses azurin as an electron acceptor to transfer electrons from the reduced tryptophylquinone cofactor.<ref>PMID:11495996</ref> <ref>PMID:16279953</ref> <ref>PMID:8188594</ref> <ref>PMID:16614214</ref>
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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/ia/2iaa_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=2iaa 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 an electron transfer complex of aromatic amine dehydrogenase (AADH) and azurin is presented. Electrons are transferred from the tryptophan tryptophylquinone (TTQ) cofactor of AADH to the type I copper of the cupredoxin azurin. This structure is compared with the complex of the TTQ-containing methylamine dehydrogenase (MADH) and the cupredoxin amicyanin. Despite significant similarities between the two quinoproteins and the two cupredoxins, each is specific for its respective partner and the ionic strength dependence and magnitude of the binding constant for each complex are quite different. The AADH-azurin interface is largely hydrophobic, covering approximately 500 A(2) of surface on each molecule, with one direct hydrogen bond linking them. The closest distance from TTQ to copper is 12.6 A compared with a distance of 9.3 A in the MADH-amicyanin complex. When the MADH-amicyanin complex is aligned with the AADH-azurin complex, the amicyanin lies on top of the azurin but is oriented quite differently. Although the copper atoms differ in position by approximately 4.7 A, the amicyanin bound to MADH appears to be rotated approximately 90 degrees from its aligned position with azurin. Comparison of the structures of the two complexes identifies features of the interface that dictate the specificity of the protein-protein interaction and determine the rate of interprotein electron transfer.
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==About this Structure==
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Crystal structure of an electron transfer complex between aromatic amine dehydrogenase and azurin from Alcaligenes faecalis.,Sukumar N, Chen ZW, Ferrari D, Merli A, Rossi GL, Bellamy HD, Chistoserdov A, Davidson VL, Mathews FS Biochemistry. 2006 Nov 14;45(45):13500-10. PMID:17087503<ref>PMID:17087503</ref>
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2IAA is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Alcaligenes_faecalis Alcaligenes faecalis] with CU as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Aralkylamine_dehydrogenase Aralkylamine dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.99.4 1.4.99.4] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2IAA 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 structure of an electron transfer complex between aromatic amine dehydrogenase and azurin from Alcaligenes faecalis., Sukumar N, Chen ZW, Ferrari D, Merli A, Rossi GL, Bellamy HD, Chistoserdov A, Davidson VL, Mathews FS, Biochemistry. 2006 Nov 14;45(45):13500-10. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17087503 17087503]
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</div>
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[[Category: Alcaligenes faecalis]]
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<div class="pdbe-citations 2iaa" style="background-color:#fffaf0;"></div>
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[[Category: Aralkylamine dehydrogenase]]
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[[Category: Single protein]]
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[[Category: Bellamy, H.D.]]
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[[Category: Chen, Z.]]
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[[Category: Chistoserdov, A.]]
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[[Category: Davidson, V.L.]]
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[[Category: Ferrati, D.]]
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[[Category: Leys, D.]]
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[[Category: Mathews, F.S.]]
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[[Category: Merli, A.]]
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[[Category: Rossi, G.L.]]
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[[Category: Scrutton, N.S.]]
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[[Category: Sukumar, N.]]
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[[Category: CU]]
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[[Category: cupredoxin]]
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[[Category: electron transfer]]
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[[Category: quinoprotein]]
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[[Category: tryptophan tryptophylquinone]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 12:12:36 2007''
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==See Also==
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*[[Aromatic amine dehydrogenase 3D structures|Aromatic amine dehydrogenase 3D structures]]
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*[[Azurin 3D structures|Azurin 3D structures]]
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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: Alcaligenes faecalis]]
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[[Category: Large Structures]]
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[[Category: Bellamy HD]]
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[[Category: Chen Z]]
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[[Category: Chistoserdov A]]
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[[Category: Davidson VL]]
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[[Category: Ferrati D]]
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[[Category: Leys D]]
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[[Category: Mathews FS]]
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[[Category: Merli A]]
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[[Category: Rossi GL]]
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[[Category: Scrutton NS]]
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[[Category: Sukumar N]]

Current revision

Crystal Structure of an Electron Transfer Complex Between Aromatic Amine Dephydrogenase and Azurin from Alcaligenes Faecalis (Form 2)

PDB ID 2iaa

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