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New page: left|200px<br /> <applet load="1v0h" size="450" color="white" frame="true" align="right" spinBox="true" caption="1v0h, resolution 1.46Å" /> '''ASCOBATE PEROXIDASE... |
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== | ==ASCOBATE PEROXIDASE FROM SOYBEAN CYTOSOL IN COMPLEX WITH SALICYLHYDROXAMIC ACID== | ||
Ascorbate peroxidase is a bifunctional peroxidase that catalyzes the | <StructureSection load='1v0h' size='340' side='right'caption='[[1v0h]], [[Resolution|resolution]] 1.46Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1v0h]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Glycine_max Glycine max]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V0H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1V0H FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.46Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=SHA:SALICYLHYDROXAMIC+ACID'>SHA</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=1v0h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1v0h OCA], [https://pdbe.org/1v0h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1v0h RCSB], [https://www.ebi.ac.uk/pdbsum/1v0h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1v0h ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q43758_SOYBN Q43758_SOYBN] | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/v0/1v0h_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</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=1v0h ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Ascorbate peroxidase is a bifunctional peroxidase that catalyzes the H(2)O(2)-dependent oxidation of both ascorbate and various aromatic substrates. The ascorbate binding site was recently identified as being close to the gamma-heme edge [Sharp, K. H., Mewies, M., Moody, P. C. E., and Raven, E. L. (2003)Nat. Struct. Biol. 10, 303-307]. In this work, the X-ray crystal structure of recombinant soybean cytosolic ascorbate peroxidase (rsAPX) in complex with salicylhydroxamic acid (SHA) has been determined to 1.46 A. The SHA molecule is bound close to the delta-heme edge in a cavity that connects the distal side of the heme to the surface of the protein. There are hydrogen bonds between the phenolic hydroxide of the SHA and the main chain carbonyl of Pro132, between the carbonyl oxygen of SHA and the side chain guanadinium group of Arg38, and between the hydroxamic acid group and the indole nitrogen of Trp41. The structure provides the first information about the location of the aromatic binding site in ascorbate peroxidase and, together with our previous data [Sharp, K. H., et al. (2003) Nat. Struct. Biol. 10, 303-307], completes the structural description of the binding properties of ascorbate peroxidase. The mechanistic implications of the results are discussed in terms of our current understanding of how APX catalyzes oxidation of different types of substrates bound at different locations. | |||
Crystal structure of the ascorbate peroxidase-salicylhydroxamic acid complex.,Sharp KH, Moody PC, Brown KA, Raven EL Biochemistry. 2004 Jul 13;43(27):8644-51. PMID:15236572<ref>PMID:15236572</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1v0h" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ascorbate peroxidase 3D structures|Ascorbate peroxidase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Glycine max]] | [[Category: Glycine max]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Moody | [[Category: Moody PCE]] | ||
[[Category: Raven | [[Category: Raven EL]] | ||
[[Category: Sharp | [[Category: Sharp KH]] | ||
Latest revision as of 16:06, 13 December 2023
ASCOBATE PEROXIDASE FROM SOYBEAN CYTOSOL IN COMPLEX WITH SALICYLHYDROXAMIC ACIDASCOBATE PEROXIDASE FROM SOYBEAN CYTOSOL IN COMPLEX WITH SALICYLHYDROXAMIC ACID
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedAscorbate peroxidase is a bifunctional peroxidase that catalyzes the H(2)O(2)-dependent oxidation of both ascorbate and various aromatic substrates. The ascorbate binding site was recently identified as being close to the gamma-heme edge [Sharp, K. H., Mewies, M., Moody, P. C. E., and Raven, E. L. (2003)Nat. Struct. Biol. 10, 303-307]. In this work, the X-ray crystal structure of recombinant soybean cytosolic ascorbate peroxidase (rsAPX) in complex with salicylhydroxamic acid (SHA) has been determined to 1.46 A. The SHA molecule is bound close to the delta-heme edge in a cavity that connects the distal side of the heme to the surface of the protein. There are hydrogen bonds between the phenolic hydroxide of the SHA and the main chain carbonyl of Pro132, between the carbonyl oxygen of SHA and the side chain guanadinium group of Arg38, and between the hydroxamic acid group and the indole nitrogen of Trp41. The structure provides the first information about the location of the aromatic binding site in ascorbate peroxidase and, together with our previous data [Sharp, K. H., et al. (2003) Nat. Struct. Biol. 10, 303-307], completes the structural description of the binding properties of ascorbate peroxidase. The mechanistic implications of the results are discussed in terms of our current understanding of how APX catalyzes oxidation of different types of substrates bound at different locations. Crystal structure of the ascorbate peroxidase-salicylhydroxamic acid complex.,Sharp KH, Moody PC, Brown KA, Raven EL Biochemistry. 2004 Jul 13;43(27):8644-51. PMID:15236572[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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