1c8x

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[[Image:1c8x.gif|left|200px]]
 
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==Endo-Beta-N-Acetylglucosaminidase H, D130E Mutant==
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The line below this paragraph, containing "STRUCTURE_1c8x", creates the "Structure Box" on the page.
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<StructureSection load='1c8x' size='340' side='right'caption='[[1c8x]], [[Resolution|resolution]] 2.00&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'>[[1c8x]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_plicatus Streptomyces plicatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C8X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1C8X FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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&#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=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
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{{STRUCTURE_1c8x| PDB=1c8x | 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=1c8x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1c8x OCA], [https://pdbe.org/1c8x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1c8x RCSB], [https://www.ebi.ac.uk/pdbsum/1c8x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1c8x ProSAT]</span></td></tr>
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</table>
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'''ENDO-BETA-N-ACETYLGLUCOSAMINIDASE H, D130E MUTANT'''
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== Function ==
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[https://www.uniprot.org/uniprot/EBAG_STRPL EBAG_STRPL] Cleaves asparagine-linked oligomannose and hybrid, but not complex, oligosaccharides from glycoproteins.
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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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Endo-beta-N-acetylglucosaminidase H hydrolyzes the beta-(1-4)-glycosidic link of the N,N'-diacetylchitobiose core of high-mannose and hybrid asparagine-linked oligosaccharides. Seven mutants of the active site residues, Asp130 and Glu132, have been prepared, assayed, and crystallized. They include single site mutants of each residue to the corresponding amide, to Ala and to the alternate acidic residue, and to the double amide mutant. The mutants of Asp130 are more active than the corresponding Glu132 mutants, consistent with the assignment of the latter residue as the primary catalytic residue. The amide mutants are more active than the alternate acidic residue mutants, which in turn are more active than the Ala mutants. The structures of the Asn mutant of Asp130 and the double mutant are very similar to that of the wild-type enzyme. Several residues surrounding the mutated residues, including some that form part of the core of the beta-barrel and especially Tyr168 and Tyr244, adopt a very different conformation in the structures of the other two mutants of Asp130 and in the Asp mutant of Glu132. The results show that the residues in the upper layers of the beta-barrel can organize into two very distinct packing arrangements that depend on subtle electrostatic and steric differences and that greatly affect the geometry of the substrate-binding cleft. Consequently, the relative activities of several of the mutants are defined by structural changes, leading to impaired substrate binding, in addition to changes in functionality.
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Check<jmol>
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<jmolCheckbox>
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==About this Structure==
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/c8/1c8x_consurf.spt"</scriptWhenChecked>
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1C8X is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Streptomyces_plicatus Streptomyces plicatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C8X OCA].
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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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==Reference==
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</jmolCheckbox>
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Mutations of endo-beta-N-acetylglucosaminidase H active site residueAs sp130 anG glu132: activities and conformations., Rao V, Cui T, Guan C, Van Roey P, Protein Sci. 1999 Nov;8(11):2338-46. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10595536 10595536]
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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=1c8x ConSurf].
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[[Category: Mannosyl-glycoprotein endo-beta-N-acetylglucosaminidase]]
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<div style="clear:both"></div>
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[[Category: Single protein]]
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Streptomyces plicatus]]
[[Category: Streptomyces plicatus]]
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[[Category: Guan, C.]]
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[[Category: Guan C]]
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[[Category: Rao, V.]]
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[[Category: Rao V]]
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[[Category: Roey, P Van.]]
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[[Category: Tao C]]
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[[Category: Tao, C.]]
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[[Category: Van Roey P]]
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[[Category: Hydrolase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:28:32 2008''
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Current revision

Endo-Beta-N-Acetylglucosaminidase H, D130E Mutant

PDB ID 1c8x

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