1rju
From Proteopedia
(New page: 200px<br /><applet load="1rju" size="450" color="white" frame="true" align="right" spinBox="true" caption="1rju, resolution 1.44Å" /> '''Crystal structure of...) |
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| - | [[Image:1rju.gif|left|200px]]<br /><applet load="1rju" size=" | + | [[Image:1rju.gif|left|200px]]<br /><applet load="1rju" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="1rju, resolution 1.44Å" /> | caption="1rju, resolution 1.44Å" /> | ||
'''Crystal structure of a truncated form of yeast copper thionein'''<br /> | '''Crystal structure of a truncated form of yeast copper thionein'''<br /> | ||
==Overview== | ==Overview== | ||
| - | We report here the crystal structure of yeast copper thionein (Cu-MT), determined at 1.44-A resolution. The Cu-MT structure shows the largest | + | We report here the crystal structure of yeast copper thionein (Cu-MT), determined at 1.44-A resolution. The Cu-MT structure shows the largest known oligonuclear Cu(I) thiolate cluster in biology, consisting of six trigonally and two digonally coordinated Cu(I) ions. This is at variance with the results from previous spectroscopic determinations, which were performed on MT samples containing seven rather than eight metal ions. The protein backbone has a random coil structure with the loops enfolding the copper cluster, which is located in a cleft where it is bound to 10 cysteine residues. The protein structure is somewhat different from that of Ag(7)-MT and similar, but not identical, to that of Cu(7)-MT. Besides the different structure of the metal cluster, the main differences lie in the cysteine topology and in the conformation of some portions of the backbone. The present structure suggests that Cu-MT, in addition to its role as a safe depository for copper ions in the cell, may play an active role in the delivery of copper to metal-free chaperones. |
==About this Structure== | ==About this Structure== | ||
| - | 1RJU is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/ ] with CU1 as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http:// | + | 1RJU is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/ ] with <scene name='pdbligand=CU1:'>CU1</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RJU OCA]. |
==Reference== | ==Reference== | ||
The crystal structure of yeast copper thionein: the solution of a long-lasting enigma., Calderone V, Dolderer B, Hartmann HJ, Echner H, Luchinat C, Del Bianco C, Mangani S, Weser U, Proc Natl Acad Sci U S A. 2005 Jan 4;102(1):51-6. Epub 2004 Dec 21. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15613489 15613489] | The crystal structure of yeast copper thionein: the solution of a long-lasting enigma., Calderone V, Dolderer B, Hartmann HJ, Echner H, Luchinat C, Del Bianco C, Mangani S, Weser U, Proc Natl Acad Sci U S A. 2005 Jan 4;102(1):51-6. Epub 2004 Dec 21. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15613489 15613489] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| - | [[Category: Bianco, C | + | [[Category: Bianco, C Del.]] |
[[Category: Calderone, V.]] | [[Category: Calderone, V.]] | ||
[[Category: Dolderer, B.]] | [[Category: Dolderer, B.]] | ||
[[Category: Echner, H.]] | [[Category: Echner, H.]] | ||
| - | [[Category: Hartmann, H | + | [[Category: Hartmann, H J.]] |
[[Category: Luchinat, C.]] | [[Category: Luchinat, C.]] | ||
[[Category: Mangani, S.]] | [[Category: Mangani, S.]] | ||
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[[Category: yeast cu(i) metallothionein]] | [[Category: yeast cu(i) metallothionein]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:51:41 2008'' |
Revision as of 12:51, 21 February 2008
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Crystal structure of a truncated form of yeast copper thionein
Overview
We report here the crystal structure of yeast copper thionein (Cu-MT), determined at 1.44-A resolution. The Cu-MT structure shows the largest known oligonuclear Cu(I) thiolate cluster in biology, consisting of six trigonally and two digonally coordinated Cu(I) ions. This is at variance with the results from previous spectroscopic determinations, which were performed on MT samples containing seven rather than eight metal ions. The protein backbone has a random coil structure with the loops enfolding the copper cluster, which is located in a cleft where it is bound to 10 cysteine residues. The protein structure is somewhat different from that of Ag(7)-MT and similar, but not identical, to that of Cu(7)-MT. Besides the different structure of the metal cluster, the main differences lie in the cysteine topology and in the conformation of some portions of the backbone. The present structure suggests that Cu-MT, in addition to its role as a safe depository for copper ions in the cell, may play an active role in the delivery of copper to metal-free chaperones.
About this Structure
1RJU is a Single protein structure of sequence from [1] with as ligand. Full crystallographic information is available from OCA.
Reference
The crystal structure of yeast copper thionein: the solution of a long-lasting enigma., Calderone V, Dolderer B, Hartmann HJ, Echner H, Luchinat C, Del Bianco C, Mangani S, Weser U, Proc Natl Acad Sci U S A. 2005 Jan 4;102(1):51-6. Epub 2004 Dec 21. PMID:15613489
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