This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.


2isa

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:2isa.gif|left|200px]]
+
{{Seed}}
 +
[[Image:2isa.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_2isa| PDB=2isa | SCENE= }}
{{STRUCTURE_2isa| PDB=2isa | SCENE= }}
-
'''Crystal Structure of Vibrio salmonicida catalase'''
+
===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.
+
The line below this paragraph, {{ABSTRACT_PUBMED_17242507}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 17242507 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_17242507}}
==About this Structure==
==About this Structure==
Line 35: Line 39:
[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
[[Category: Peroxidase]]
[[Category: Peroxidase]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 07:48:23 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 19:41:36 2008''

Revision as of 16:41, 27 July 2008

Image:2isa.png

Template:STRUCTURE 2isa

Crystal Structure of Vibrio salmonicida catalase

Template:ABSTRACT PUBMED 17242507

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 Sun Jul 27 19:41:36 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2isa"
Personal tools