2c8s

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
-
[[Image:2c8s.gif|left|200px]]
+
{{Seed}}
 +
[[Image:2c8s.png|left|200px]]
<!--
<!--
Line 9: Line 10:
{{STRUCTURE_2c8s| PDB=2c8s | SCENE= }}
{{STRUCTURE_2c8s| PDB=2c8s | SCENE= }}
-
'''CYTOCHROME CL FROM METHYLOBACTERIUM EXTORQUENS'''
+
===CYTOCHROME CL FROM METHYLOBACTERIUM EXTORQUENS===
-
==Overview==
+
<!--
-
The structure of cytochrome cL from Methylobacterium extorquens has been determined by X-ray crystallography to a resolution of 1.6 A. This unusually large, acidic cytochrome is the physiological electron acceptor for the quinoprotein methanol dehydrogenase in the periplasm of methylotrophic bacteria. Its amino acid sequence is completely different from that of other cytochromes but its X-ray structure reveals a core that is typical of class I cytochromes c, having alpha-helices folded into a compact structure enclosing the single haem c prosthetic group and leaving one edge of the haem exposed. The haem is bound through thioether bonds to Cys65 and Cys68, and the fifth ligand to the haem iron is provided by His69. Remarkably, the sixth ligand is provided by His112, and not by Met109, which had been shown to be the sixth ligand in solution. Cytochrome cL is unusual in having a disulphide bridge that tethers the long C-terminal extension to the body of the structure. The crystal structure reveals that, close to the inner haem propionate, there is tightly bound calcium ion that is likely to be involved in stabilization of the redox potential, and that may be important in the flow of electrons from reduced pyrroloquinoline quinone in methanol dehydrogenase to the haem of cytochrome cL. As predicted, both haem propionates are exposed to solvent, accounting for the unusual influence of pH on the redox potential of this cytochrome.
+
The line below this paragraph, {{ABSTRACT_PUBMED_16414073}}, adds the Publication Abstract to the page
 +
(as it appears on PubMed at http://www.pubmed.gov), where 16414073 is the PubMed ID number.
 +
-->
 +
{{ABSTRACT_PUBMED_16414073}}
==About this Structure==
==About this Structure==
Line 35: Line 39:
[[Category: Heme]]
[[Category: Heme]]
[[Category: Metal-binding]]
[[Category: Metal-binding]]
-
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 21:27:38 2008''
+
 
 +
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 05:47:47 2008''

Revision as of 02:48, 29 July 2008

Image:2c8s.png

Template:STRUCTURE 2c8s

CYTOCHROME CL FROM METHYLOBACTERIUM EXTORQUENS

Template:ABSTRACT PUBMED 16414073

About this Structure

2C8S is a Single protein structure of sequence from Thermomicrobium roseum. This structure supersedes the now removed PDB entry 1umm. Full crystallographic information is available from OCA.

Reference

The 1.6A X-ray structure of the unusual c-type cytochrome, cytochrome cL, from the methylotrophic bacterium Methylobacterium extorquens., Williams P, Coates L, Mohammed F, Gill R, Erskine P, Bourgeois D, Wood SP, Anthony C, Cooper JB, J Mol Biol. 2006 Mar 17;357(1):151-62. Epub 2006 Jan 5. PMID:16414073

Page seeded by OCA on Tue Jul 29 05:47:47 2008

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2c8s"
Personal tools