2isa
From Proteopedia
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|PDB= 2isa |SIZE=350|CAPTION= <scene name='initialview01'>2isa</scene>, resolution 1.97Å | |PDB= 2isa |SIZE=350|CAPTION= <scene name='initialview01'>2isa</scene>, resolution 1.97Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene> | + | |LIGAND= <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=OMT:S-DIOXYMETHIONINE'>OMT</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Catalase Catalase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.11.1.6 1.11.1.6] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Catalase Catalase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.11.1.6 1.11.1.6] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2isa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2isa OCA], [http://www.ebi.ac.uk/pdbsum/2isa PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2isa RCSB]</span> | ||
}} | }} | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2ISA is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/ | + | 2ISA is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Aliivibrio_salmonicida Aliivibrio salmonicida]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ISA OCA]. |
==Reference== | ==Reference== | ||
The first structure of a cold-active catalase from Vibrio salmonicida at 1.96 A reveals structural aspects of cold adaptation., Riise EK, Lorentzen MS, Helland R, Smalas AO, Leiros HK, Willassen NP, Acta Crystallogr D Biol Crystallogr. 2007 Feb;63(Pt 2):135-48. Epub 2007, Jan 16. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17242507 17242507] | The first structure of a cold-active catalase from Vibrio salmonicida at 1.96 A reveals structural aspects of cold adaptation., Riise EK, Lorentzen MS, Helland R, Smalas AO, Leiros HK, Willassen NP, Acta Crystallogr D Biol Crystallogr. 2007 Feb;63(Pt 2):135-48. Epub 2007, Jan 16. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17242507 17242507] | ||
| + | [[Category: Aliivibrio salmonicida]] | ||
[[Category: Catalase]] | [[Category: Catalase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Vibrio salmonicida]] | ||
[[Category: Helland, R.]] | [[Category: Helland, R.]] | ||
[[Category: Leiros, H K.S.]] | [[Category: Leiros, H K.S.]] | ||
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[[Category: Smalas, A O.]] | [[Category: Smalas, A O.]] | ||
[[Category: Willassen, N P.]] | [[Category: Willassen, N P.]] | ||
| - | [[Category: CL]] | ||
| - | [[Category: GOL]] | ||
| - | [[Category: HEM]] | ||
[[Category: 3d-structure]] | [[Category: 3d-structure]] | ||
[[Category: heme]] | [[Category: heme]] | ||
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[[Category: peroxidase]] | [[Category: peroxidase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:47:51 2008'' |
Revision as of 00:47, 31 March 2008
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| , resolution 1.97Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , | ||||||
| Activity: | Catalase, with EC number 1.11.1.6 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of Vibrio salmonicida catalase
Overview
The cold-adapted catalase from the fish-pathogenic bacterium Vibrio salmonicida (VSC) has recently been characterized and shown to be two times more catalytically efficient compared with catalase from the mesophilic human pathogen Proteus mirabilis [PMC; Lorentzen et al. (2006), Extremophiles, 10, 427-440]. VSC is also less temperature-stable, with a half-life of 5 min at 333 K compared with 50 min for PMC. This was the background for solving the crystal structure of the cold-adapted VSC to 1.96 A and performing an extensive structural comparison of VSC and PMC. The comparison revealed that the entrance (the major channel) leading to the catalytically essential haem group, is locally more flexible and slightly wider in VSC. This might explain the enhanced catalytic efficiency of the nearly diffusion-controlled degradation of hydrogen peroxide into water and molecular oxygen in VSC. The reduced thermal stability of the cold-adapted VSC may be explained by a reduced number of ion-pair networks. The four C-terminal alpha-helices are displaced in the structures, probably owing to missing ionic interactions in VSC compared with PMC, and this is postulated as an initiation site for unfolding the cold-adapted enzyme. VSC is the first crystal structure reported of a cold-adapted monofunctional haem-containing catalase.
About this Structure
2ISA is a Single protein structure of sequence from Aliivibrio salmonicida. Full crystallographic information is available from OCA.
Reference
The first structure of a cold-active catalase from Vibrio salmonicida at 1.96 A reveals structural aspects of cold adaptation., Riise EK, Lorentzen MS, Helland R, Smalas AO, Leiros HK, Willassen NP, Acta Crystallogr D Biol Crystallogr. 2007 Feb;63(Pt 2):135-48. Epub 2007, Jan 16. PMID:17242507
Page seeded by OCA on Mon Mar 31 03:47:51 2008
