2c1u: Difference between revisions

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{{STRUCTURE_2c1u|  PDB=2c1u  |  SCENE=  }}  
{{STRUCTURE_2c1u|  PDB=2c1u  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF THE DI-HAEM CYTOCHROME C PEROXIDASE FROM PARACOCCUS PANTOTROPHUS- OXIDISED FORM'''
===CRYSTAL STRUCTURE OF THE DI-HAEM CYTOCHROME C PEROXIDASE FROM PARACOCCUS PANTOTROPHUS- OXIDISED FORM===




==Overview==
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Bacterial cytochrome c peroxidases contain an electron transferring (E) heme domain and a peroxidatic (P) heme domain. All but one of these enzymes are isolated in an inactive oxidized state and require reduction of the E heme by a small redox donor protein in order to activate the P heme. Here we present the structures of the inactive oxidized and active mixed valence enzyme from Paracoccus pantotrophus. Chain flexibility in the former, as expressed by the crystallographic temperature factors, is strikingly distributed in certain loop regions, and these coincide with the regions of conformational change that occur in forming the active mixed valence enzyme. On the basis of these changes, we postulate a series of events that occur to link the trigger of the electron entering the E heme from either pseudoazurin or cytochrome c(550) and the dissociation of a coordinating histidine at the P heme, which allows substrate access.
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{{ABSTRACT_PUBMED_16407070}}


==About this Structure==
==About this Structure==
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[[Category: Periplasmic]]
[[Category: Periplasmic]]
[[Category: Peroxidase]]
[[Category: Peroxidase]]
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Revision as of 08:18, 29 July 2008

File:2c1u.png

Template:STRUCTURE 2c1u

CRYSTAL STRUCTURE OF THE DI-HAEM CYTOCHROME C PEROXIDASE FROM PARACOCCUS PANTOTROPHUS- OXIDISED FORMCRYSTAL STRUCTURE OF THE DI-HAEM CYTOCHROME C PEROXIDASE FROM PARACOCCUS PANTOTROPHUS- OXIDISED FORM

Template:ABSTRACT PUBMED 16407070

About this StructureAbout this Structure

2C1U is a Single protein structure of sequence from Paracoccus pantotrophus. Full crystallographic information is available from OCA.

ReferenceReference

Activation and catalysis of the di-heme cytochrome c peroxidase from Paracoccus pantotrophus., Echalier A, Goodhew CF, Pettigrew GW, Fulop V, Structure. 2006 Jan;14(1):107-17. PMID:16407070

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