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1sch

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{{STRUCTURE_1sch| PDB=1sch | SCENE= }}
{{STRUCTURE_1sch| PDB=1sch | SCENE= }}
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'''PEANUT PEROXIDASE'''
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===PEANUT PEROXIDASE===
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==Overview==
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BACKGROUND. Peroxidases catalyze a wide variety of peroxide-dependent oxidations. Based on sequence alignments, heme peroxidases have been divided into three classes. Crystal structures are available for peroxidases of classes I and II, but until now no structure has been determined for class III, the classical extracellular plant peroxidases. RESULTS. The crystal structure of peanut peroxidase has been solved to 2.7 A resolution. The helical fold is similar to that of known peroxidase structures. The 294-residue polypeptide chain is accompanied by a heme and two calcium ions, and there is some evidence of glycosylation. CONCLUSIONS. This is the first complete structure of a class III peroxidase and as such should serve as a model for other class III enzymes including the much-studied horseradish peroxidase. It may also aid in the interpretation of functional differences between the peroxidase classes. Ten helices conserved in class I and II peroxidases are also found in peanut peroxidase. Key residues of the heme environment and the location of two calcium ions are shared with class II peroxidases. Peanut peroxidase contains three unique helices, two of which contribute to the substrate access channel leading to the heme edge.
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The line below this paragraph, {{ABSTRACT_PUBMED_8805539}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 8805539 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8805539}}
==About this Structure==
==About this Structure==
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[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
[[Category: Peroxidase]]
[[Category: Peroxidase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:32:38 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 10:48:02 2008''

Revision as of 07:48, 28 July 2008

Image:1sch.png

Template:STRUCTURE 1sch

PEANUT PEROXIDASE

Template:ABSTRACT PUBMED 8805539

About this Structure

1SCH is a Single protein structure of sequence from Arachis hypogaea. Full crystallographic information is available from OCA.

Reference

The crystal structure of peanut peroxidase., Schuller DJ, Ban N, Huystee RB, McPherson A, Poulos TL, Structure. 1996 Mar 15;4(3):311-21. PMID:8805539

Page seeded by OCA on Mon Jul 28 10:48:02 2008

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