1gof

From Proteopedia

(Difference between revisions)

Revision as of 12:43, 26 July 2023

NOVEL THIOETHER BOND REVEALED BY A 1.7 ANGSTROMS CRYSTAL STRUCTURE OF GALACTOSE OXIDASE

Structural highlights

1gof is a 1 chain structure with sequence from Hypomyces rosellus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.7Å
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

GAOA_GIBZA Catalyzes the sterospecific oxidation of primary alcohols to the corresponding aldehydes. The biologically relevant substrate of the enzyme is not known as the enzyme exhibits broad substrate specificity from small alcohols through sugars to oligo- and polysaccharides.^[1] ^[2]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Galactose oxidase is an extracellular enzyme secreted by the fungus Dactylium dendroides. It is monomeric, with a relative molecular mass of 68,000, catalyses the stereospecific oxidation of a broad range of primary alcohol substrates and possesses a unique mononuclear copper site essential for catalysing a two-electron transfer reaction during the oxidation of primary alcohols to corresponding aldehydes. Recent evidence arguing against a Cu(III)-Cu(I) couple implies the existence of a second redox-active site proposed to involve pyrroloquinoline quinone or a tyrosine radical. We now report the crystal structure of galactose oxidase at 1.7 A resolution. This reveals a unique structural feature at the copper site with a novel thioether bond linking Cys 228 and Tyr 272 in a stacking interaction with Trp 290. We propose that these molecular components stabilize the protein free-radical species essential for catalysis and thus provide a 'built-in' secondary cofactor. This feature may represent a new mechanism for mediating electron transfer in metalloenzymes in the absence of exogenous cofactors.

Novel thioether bond revealed by a 1.7 A crystal structure of galactose oxidase.,Ito N, Phillips SE, Stevens C, Ogel ZB, McPherson MJ, Keen JN, Yadav KD, Knowles PF Nature. 1991 Mar 7;350(6313):87-90. PMID:2002850^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ COOPER JA, SMITH W, BACILA M, MEDINA H. Galactose oxidase from Polyporus circinatus, Fr. J Biol Chem. 1959 Mar;234(3):445-8 PMID:13641238
↑ Kosman DJ, Ettinger MJ, Weiner RE, Massaro EJ. The molecular properties of the copper enzyme galactose oxidase. Arch Biochem Biophys. 1974 Dec;165(2):456-67. PMID:4441089 doi:10.1016/0003-9861(74)90271-9
↑ Ito N, Phillips SE, Stevens C, Ogel ZB, McPherson MJ, Keen JN, Yadav KD, Knowles PF. Novel thioether bond revealed by a 1.7 A crystal structure of galactose oxidase. Nature. 1991 Mar 7;350(6313):87-90. PMID:2002850 doi:http://dx.doi.org/10.1038/350087a0

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1gof"

Categories: Hypomyces rosellus | Large Structures | Ito N | Knowles PF | Phillips SEV

@@ Line 3: / Line 3: @@
 <StructureSection load='1gof' size='340' side='right'caption='[[1gof]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1gof]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Cladobotryum_dendroides Cladobotryum dendroides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GOF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GOF FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1gof]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Hypomyces_rosellus Hypomyces rosellus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GOF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GOF FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7&#8491;</td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Galactose_oxidase Galactose oxidase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.9 1.1.3.9] </span></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1gof FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gof OCA], [https://pdbe.org/1gof PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gof RCSB], [https://www.ebi.ac.uk/pdbsum/1gof PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gof ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/GAOA_GIBZA GAOA_GIBZA] Catalyzes the sterospecific oxidation of primary alcohols to the corresponding aldehydes. The biologically relevant substrate of the enzyme is not known as the enzyme exhibits broad substrate specificity from small alcohols through sugars to oligo- and polysaccharides.<ref>PMID:13641238</ref> <ref>PMID:4441089</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 34: / Line 36: @@
 __TOC__
 </StructureSection>
-[[Category: Cladobotryum dendroides]]
+[[Category: Hypomyces rosellus]]
-[[Category: Galactose oxidase]]
 [[Category: Large Structures]]
-[[Category: Ito, N]]
+[[Category: Ito N]]
-[[Category: Knowles, P F]]
+[[Category: Knowles PF]]
-[[Category: Phillips, S E.V]]
+[[Category: Phillips SEV]]

1gof

From Proteopedia

Revision as of 12:43, 26 July 2023

NOVEL THIOETHER BOND REVEALED BY A 1.7 ANGSTROMS CRYSTAL STRUCTURE OF GALACTOSE OXIDASE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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