1maa

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[[Image:1maa.gif|left|200px]]
 
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{{Structure
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==MOUSE ACETYLCHOLINESTERASE CATALYTIC DOMAIN, GLYCOSYLATED PROTEIN==
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|PDB= 1maa |SIZE=350|CAPTION= <scene name='initialview01'>1maa</scene>, resolution 2.9&Aring;
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<StructureSection load='1maa' size='340' side='right'caption='[[1maa]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=DME:DECAMETHONIUM+ION'>DME</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>
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<table><tr><td colspan='2'>[[1maa]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MAA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MAA FirstGlance]. <br>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Acetylcholinesterase Acetylcholinesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.7 3.1.1.7]
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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]] 2.9&#8491;</td></tr>
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|GENE= MOUSE ACHE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DME:DECAMETHONIUM+ION'>DME</scene>, <scene name='pdbligand=FUL:BETA-L-FUCOSE'>FUL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
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}}
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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=1maa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1maa OCA], [https://pdbe.org/1maa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1maa RCSB], [https://www.ebi.ac.uk/pdbsum/1maa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1maa ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/ACES_MOUSE ACES_MOUSE] Terminates signal transduction at the neuromuscular junction by rapid hydrolysis of the acetylcholine released into the synaptic cleft.
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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/ma/1maa_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=1maa 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 mouse acetylcholinesterase at 2.9-A resolution reveals a tetrameric assembly of subunits with an antiparallel alignment of two canonical homodimers assembled through four-helix bundles. In the tetramer, a short Omega loop, composed of a cluster of hydrophobic residues conserved in mammalian acetylcholinesterases along with flanking alpha-helices, associates with the peripheral anionic site of the facing subunit and sterically occludes the entrance of the gorge leading to the active center. The inverse loop-peripheral site interaction occurs within the second pair of subunits, but the peripheral sites on the two loop-donor subunits remain freely accessible to the solvent. The position and complementarity of the peripheral site-occluding loop mimic the characteristics of the central loop of the peptidic inhibitor fasciculin bound to mouse acetylcholinesterase. Tetrameric forms of cholinesterases are widely distributed in nature and predominate in mammalian brain. This structure reveals a likely mode of subunit arrangement and suggests that the peripheral site, located near the rim of the gorge, is a site for association of neighboring subunits or heterologous proteins with interactive surface loops.
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'''MOUSE ACETYLCHOLINESTERASE CATALYTIC DOMAIN, GLYCOSYLATED PROTEIN'''
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Crystal structure of mouse acetylcholinesterase. A peripheral site-occluding loop in a tetrameric assembly.,Bourne Y, Taylor P, Bougis PE, Marchot P J Biol Chem. 1999 Jan 29;274(5):2963-70. PMID:9915834<ref>PMID:9915834</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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<div class="pdbe-citations 1maa" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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The crystal structure of mouse acetylcholinesterase at 2.9-A resolution reveals a tetrameric assembly of subunits with an antiparallel alignment of two canonical homodimers assembled through four-helix bundles. In the tetramer, a short Omega loop, composed of a cluster of hydrophobic residues conserved in mammalian acetylcholinesterases along with flanking alpha-helices, associates with the peripheral anionic site of the facing subunit and sterically occludes the entrance of the gorge leading to the active center. The inverse loop-peripheral site interaction occurs within the second pair of subunits, but the peripheral sites on the two loop-donor subunits remain freely accessible to the solvent. The position and complementarity of the peripheral site-occluding loop mimic the characteristics of the central loop of the peptidic inhibitor fasciculin bound to mouse acetylcholinesterase. Tetrameric forms of cholinesterases are widely distributed in nature and predominate in mammalian brain. This structure reveals a likely mode of subunit arrangement and suggests that the peripheral site, located near the rim of the gorge, is a site for association of neighboring subunits or heterologous proteins with interactive surface loops.
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*[[Acetylcholinesterase 3D structures|Acetylcholinesterase 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1MAA is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MAA OCA].
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__TOC__
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</StructureSection>
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==Reference==
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[[Category: Large Structures]]
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Crystal structure of mouse acetylcholinesterase. A peripheral site-occluding loop in a tetrameric assembly., Bourne Y, Taylor P, Bougis PE, Marchot P, J Biol Chem. 1999 Jan 29;274(5):2963-70. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9915834 9915834]
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[[Category: Acetylcholinesterase]]
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[[Category: Mus musculus]]
[[Category: Mus musculus]]
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[[Category: Single protein]]
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[[Category: Bougis PE]]
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[[Category: Bougis, P E.]]
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[[Category: Bourne Y]]
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[[Category: Bourne, Y.]]
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[[Category: Marchot P]]
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[[Category: Marchot, P.]]
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[[Category: Taylor P]]
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[[Category: Taylor, P.]]
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[[Category: DME]]
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[[Category: GOL]]
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[[Category: NAG]]
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[[Category: PO4]]
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[[Category: acetylcholinesterase]]
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[[Category: glycosylated protein]]
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[[Category: hydrolase]]
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[[Category: hydrolase fold]]
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[[Category: serine esterase]]
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[[Category: tetramer]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:41:02 2008''
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Current revision

MOUSE ACETYLCHOLINESTERASE CATALYTIC DOMAIN, GLYCOSYLATED PROTEIN

PDB ID 1maa

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