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.

2fyu

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 11:06, 27 March 2020

Crystal structure of bovine heart mitochondrial bc1 with jg144 inhibitor

Structural highlights

2fyu is a 11 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	1qcr, 1l0n, 1l0l, 1sqx, 1sqv
Activity:	Ubiquinol--cytochrome-c reductase, with EC number 1.10.2.2
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[QCR10_BOVIN] This is a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain. This protein may be closely linked to the iron-sulfur protein in the complex and function as an iron-sulfur protein binding factor. [CYB_BOVIN] Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is a respiratory chain that generates an electrochemical potential coupled to ATP synthesis. [UCRI_BOVIN] Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is a respiratory chain that generates an electrochemical potential coupled to ATP synthesis. The transit peptide of the Rieske protein seems to form part of the bc1 complex and is considered to be the subunit 11/IX of that complex. [QCR2_BOVIN] This is a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain. The core protein 2 is required for the assembly of the complex. [QCR6_BOVIN] This is a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain. This protein may mediate formation of the complex between cytochromes c and c1. [QCR1_BOVIN] This is a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain. This protein may mediate formation of the complex between cytochromes c and c1. [CY1_BOVIN] This is the heme-containing component of the cytochrome b-c1 complex, which accepts electrons from Rieske protein and transfers electrons to cytochrome c in the mitochondrial respiratory chain. [QCR9_BOVIN] This is a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is part of the mitochondrial respiratory chain. This subunit interacts with cytochrome c1.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

In the cytochrome bc(1) complex, the swivel motion of the iron-sulfur protein (ISP) between two redox sites constitutes a key component of the mechanism that achieves the separation of the two electrons in a substrate molecule at the quinol oxidation (Q(o)) site. The question remaining is how the motion of ISP is controlled so that only one electron enters the thermodynamically favorable chain via ISP. An analysis of eight structures of mitochondrial bc(1) with bound Q(o) site inhibitors revealed that the presence of inhibitors causes a bidirectional repositioning of the cd1 helix in the cytochrome b subunit. As the cd1 helix forms a major part of the ISP binding crater, any positional shift of this helix modulates the ability of cytochrome b to bind ISP. The analysis also suggests a mechanism for reversal of the ISP fixation when the shape complementarity is significantly reduced after a positional reorientation of the reaction product quinone. The importance of shape complementarity in this mechanism was confirmed by functional studies of bc(1) mutants and by a structure determination of the bacterial form of bc(1). A mechanism for the high fidelity of the bifurcated electron transfer is proposed.

Surface-modulated motion switch: capture and release of iron-sulfur protein in the cytochrome bc1 complex.,Esser L, Gong X, Yang S, Yu L, Yu CA, Xia D Proc Natl Acad Sci U S A. 2006 Aug 29;103(35):13045-50. Epub 2006 Aug 21. PMID:16924113^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Esser L, Gong X, Yang S, Yu L, Yu CA, Xia D. Surface-modulated motion switch: capture and release of iron-sulfur protein in the cytochrome bc1 complex. Proc Natl Acad Sci U S A. 2006 Aug 29;103(35):13045-50. Epub 2006 Aug 21. PMID:16924113

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2fyu"

@@ Line 1: / Line 1: @@
 ==Crystal structure of bovine heart mitochondrial bc1 with jg144 inhibitor==
-<StructureSection load='2fyu' size='340' side='right' caption='[[2fyu]], [[Resolution|resolution]] 2.26&Aring;' scene=''>
+<StructureSection load='2fyu' size='340' side='right'caption='[[2fyu]], [[Resolution|resolution]] 2.26&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2fyu]] is a 11 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FYU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FYU FirstGlance]. <br>
@@ Line 32: / Line 32: @@
 ==See Also==
+*[[Cytochrome C 3D structures|Cytochrome C 3D structures]]
 *[[Cytochrome bc1 complex|Cytochrome bc1 complex]]
-*[[Cytochrome c|Cytochrome c]]
 == References ==
 <references/>
@@ Line 39: / Line 39: @@
 </StructureSection>
 [[Category: Bos taurus]]
+[[Category: Large Structures]]
 [[Category: Ubiquinol--cytochrome-c reductase]]
 [[Category: Esser, L]]

2fyu

From Proteopedia

Revision as of 11:06, 27 March 2020

Crystal structure of bovine heart mitochondrial bc1 with jg144 inhibitor

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox