1gzb

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[[Image:1gzb.gif|left|200px]]
[[Image:1gzb.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1gzb |SIZE=350|CAPTION= <scene name='initialview01'>1gzb</scene>, resolution 1.8&Aring;
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The line below this paragraph, containing "STRUCTURE_1gzb", creates the "Structure Box" on the page.
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|SITE= <scene name='pdbsite=CA1:Ca+Binding+Site'>CA1</scene>, <scene name='pdbsite=CA2:Ca+Binding+Site'>CA2</scene> and <scene name='pdbsite=GL1:Sugar+Binding+Site'>GL1</scene>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Peroxidase Peroxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.11.1.7 1.11.1.7] </span>
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or leave the SCENE parameter empty for the default display.
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|GENE=
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-->
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|DOMAIN=
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{{STRUCTURE_1gzb| PDB=1gzb | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gzb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gzb OCA], [http://www.ebi.ac.uk/pdbsum/1gzb PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1gzb RCSB]</span>
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}}
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'''PEROXIDASE'''
'''PEROXIDASE'''
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[[Category: Fukuyama, K.]]
[[Category: Fukuyama, K.]]
[[Category: Kunishima, N.]]
[[Category: Kunishima, N.]]
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[[Category: glycoprotein]]
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[[Category: Glycoprotein]]
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[[Category: heme]]
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[[Category: Heme]]
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[[Category: oxidoreductase]]
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[[Category: Oxidoreductase]]
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[[Category: peroxidase]]
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[[Category: Peroxidase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 18:12:39 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:54:28 2008''
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Revision as of 15:12, 2 May 2008

Image:1gzb.gif

Template:STRUCTURE 1gzb

PEROXIDASE


Overview

In the presence of ammonium sulfate the absorption spectra of a peroxidase from the fungus Arthromyces ramosus (ARP) showed that the low-spin component increased as the pH increased from 6.0 to 9.0, whereas in its absence ARP remained in the high-spin state in the pH range investigated. The crystal structure of ARP at pH 4.5 in the presence of ammonium sulfate at 1.8 A resolution showed that the electron density at the 6th position of the heme iron seen at pH 7.5 had disappeared and that the iron atom deviated markedly from the heme plane. These observations strongly suggest that under physiological conditions the heme of ARP is in the pentacoordinated high-spin state and that at a high pH the heme iron is able to bind ammonia, forming the low-spin state. The location of the water molecule at the distal side of the heme in peroxidases is also discussed.

About this Structure

1GZB is a Single protein structure of sequence from Eukaryota. Full crystallographic information is available from OCA.

Reference

Pentacoordination of the heme iron of Arthromyces ramosus peroxidase shown by a 1.8 A resolution crystallographic study at pH 4.5., Kunishima N, Amada F, Fukuyama K, Kawamoto M, Matsunaga T, Matsubara H, FEBS Lett. 1996 Jan 15;378(3):291-4. PMID:8557120 Page seeded by OCA on Fri May 2 18:12:39 2008

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OCA

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