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| - | '''X-RAY CRYSTAL STRUCTURES OF THE OXIDIZED AND REDUCED FORMS OF THE RUBREDOXIN FROM THE MARINE HYPERTHERMOPHILIC ARCHAEBACTERIUM PYROCOCCUS FURIOSUS'''
| + | ===X-RAY CRYSTAL STRUCTURES OF THE OXIDIZED AND REDUCED FORMS OF THE RUBREDOXIN FROM THE MARINE HYPERTHERMOPHILIC ARCHAEBACTERIUM PYROCOCCUS FURIOSUS=== |
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| - | ==Overview==
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| - | The structures of the oxidized and reduced forms of the rubredoxin from the archaebacterium, Pyrococcus furiosus, an organism that grows optimally at 100 degrees C, have been determined by X-ray crystallography to a resolution of 1.8 A. Crystals of this rubredoxin grow in space group P2(1)2(1)2(1) with room temperature cell dimensions a = 34.6 A, b = 35.5 A, and c = 44.4 A. Initial phases were determined by the method of molecular replacement using the oxidized form of the rubredoxin from the mesophilic eubacterium, Clostridium pasteurianum, as a starting model. The oxidized and reduced models of P. furiosus rubredoxin each contain 414 nonhydrogen protein atoms comprising 53 residues. The model of the oxidized form contains 61 solvent H2O oxygen atoms and has been refined with X-PLOR and TNT to a final R = 0.178 with root mean square (rms) deviations from ideality in bond distances and bond angles of 0.014 A and 2.06 degrees, respectively. The model of the reduced form contains 37 solvent H2O oxygen atoms and has been refined to R = 0.193 with rms deviations from ideality in bond lengths of 0.012 A and in bond angles of 1.95 degrees. The overall structure of P. furiosus rubredoxin is similar to the structures of mesophilic rubredoxins, with the exception of a more extensive hydrogen-bonding network in the beta-sheet region and multiple electrostatic interactions (salt bridge, hydrogen bonds) of the Glu 14 side chain with groups on three other residues (the amino-terminal nitrogen of Ala 1; the indole nitrogen of Trp 3; and the amide nitrogen group of Phe 29). The influence of these and other features upon the thermostability of the P. furiosus protein is discussed. | + | The line below this paragraph, {{ABSTRACT_PUBMED_1303768}}, adds the Publication Abstract to the page |
| | + | (as it appears on PubMed at http://www.pubmed.gov), where 1303768 is the PubMed ID number. |
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| | + | {{ABSTRACT_PUBMED_1303768}} |
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| | ==About this Structure== | | ==About this Structure== |
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| | [[Category: Zhou, Z H.]] | | [[Category: Zhou, Z H.]] |
| | [[Category: Electron transport]] | | [[Category: Electron transport]] |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:31:26 2008'' | + | |
| | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 20:27:58 2008'' |
Revision as of 17:28, 30 June 2008
Template:STRUCTURE 1cad
X-RAY CRYSTAL STRUCTURES OF THE OXIDIZED AND REDUCED FORMS OF THE RUBREDOXIN FROM THE MARINE HYPERTHERMOPHILIC ARCHAEBACTERIUM PYROCOCCUS FURIOSUS
Template:ABSTRACT PUBMED 1303768
About this Structure
1CAD is a Single protein structure of sequence from Pyrococcus furiosus. Full crystallographic information is available from OCA.
Reference
X-ray crystal structures of the oxidized and reduced forms of the rubredoxin from the marine hyperthermophilic archaebacterium Pyrococcus furiosus., Day MW, Hsu BT, Joshua-Tor L, Park JB, Zhou ZH, Adams MW, Rees DC, Protein Sci. 1992 Nov;1(11):1494-507. PMID:1303768
Page seeded by OCA on Mon Jun 30 20:27:58 2008
