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| - | [[Image:2b2q.gif|left|200px]] | + | #REDIRECT [[5sw5]] This PDB entry is obsolete and replaced by 5sw5 |
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| - | {{STRUCTURE_2b2q| PDB=2b2q | SCENE= }}
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| - | '''Crystal structure of native catalase-peroxidase KATG AT pH7.5'''
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| - | ==Overview==
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| - | The catalase reaction of catalase-peroxidases involves catalase-specific features built into a peroxidase core. An arginine, 20 A from the active-site heme, acts as a molecular switch moving between two conformations, one that activates heme oxidation and one that activates oxoferryl heme reduction by H(2)O(2), facilitating the catalatic pathway in a peroxidase. The influence of the arginine is imparted to the heme through its association with or dissociation from a tyrosinate that modulates reactivity through a Met-Tyr-Trp crosslinked adduct and a pi electron interaction of the heme with the adduct Trp.
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| - | ==About this Structure==
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| - | 2B2Q is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Burkholderia_pseudomallei Burkholderia pseudomallei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2B2Q OCA].
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| - | ==Reference==
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| - | A molecular switch and electronic circuit modulate catalase activity in catalase-peroxidases., Carpena X, Wiseman B, Deemagarn T, Singh R, Switala J, Ivancich A, Fita I, Loewen PC, EMBO Rep. 2005 Dec;6(12):1156-62. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16211084 16211084]
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| - | [[Category: Burkholderia pseudomallei]]
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| - | [[Category: Catalase]]
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| - | [[Category: Single protein]]
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| - | [[Category: Carpena, X.]]
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| - | [[Category: Deemagarn, T.]]
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| - | [[Category: Fita, I.]]
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| - | [[Category: Ivancich, A.]]
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| - | [[Category: Loewen, P C.]]
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| - | [[Category: Singh, R.]]
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| - | [[Category: Switala, J.]]
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| - | [[Category: Wiseman, B.]]
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| - | [[Category: Catalase-peroxidase]]
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| - | [[Category: Katg]]
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| - | [[Category: Molecular switch]]
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| - | [[Category: Ph change]]
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| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 19:46:31 2008''
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