2hes

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{{STRUCTURE_2hes| PDB=2hes | SCENE= }}
{{STRUCTURE_2hes| PDB=2hes | SCENE= }}
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'''Cytosolic Iron-sulphur Assembly Protein- 1'''
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===Cytosolic Iron-sulphur Assembly Protein- 1===
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==Overview==
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The WD40-repeat protein Cia1 is an essential, conserved member of the cytosolic iron-sulfur (Fe/S) protein assembly (CIA) machinery in eukaryotes. Here, we report the crystal structure of Saccharomyces cerevisiae Cia1 to 1.7 A resolution. The structure folds into a beta propeller with seven blades pseudo symmetrically arranged around a central axis. Structure-based sequence alignment of Cia1 proteins shows that the WD40 propeller core elements are highly conserved. Site-directed mutagenesis of amino acid residues in loop regions with high solvent accessibility identified that the conserved top surface residue R127 performs a critical function: the R127 mutant cells grew slowly and were impaired in cytosolic Fe/S protein assembly. Human Ciao1, which reportedly interacts with the Wilms' tumor suppressor, WT1, is structurally similar to yeast Cia1. We show that Ciao1 can functionally replace Cia1 and support cytosolic Fe/S protein biogenesis. Hence, our structural and biochemical studies indicate the conservation of Cia1 function in eukaryotes.
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{{ABSTRACT_PUBMED_17937914}}
==About this Structure==
==About this Structure==
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[[Category: Biosynthetic protein]]
[[Category: Biosynthetic protein]]
[[Category: Wd40 repeat]]
[[Category: Wd40 repeat]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 06:12:12 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 05:49:54 2008''

Revision as of 02:50, 28 July 2008

Image:2hes.png

Template:STRUCTURE 2hes

Cytosolic Iron-sulphur Assembly Protein- 1

Template:ABSTRACT PUBMED 17937914

About this Structure

2HES is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

Structure of the yeast WD40 domain protein Cia1, a component acting late in iron-sulfur protein biogenesis., Srinivasan V, Netz DJ, Webert H, Mascarenhas J, Pierik AJ, Michel H, Lill R, Structure. 2007 Oct;15(10):1246-57. PMID:17937914

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