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1t2y

From Proteopedia

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{{STRUCTURE_1t2y| PDB=1t2y | SCENE= }}
{{STRUCTURE_1t2y| PDB=1t2y | SCENE= }}
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'''NMR solution structure of the protein part of Cu6-Neurospora crassa MT'''
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===NMR solution structure of the protein part of Cu6-Neurospora crassa MT===
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==Overview==
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The 3D-solution structure of Neurospora crassa Cu(6)-metallothionein (NcMT) polypeptide backbone was determined using homonuclear, multidimensional (1)H-NMR spectroscopy. It represents a new metallothionein (MT) fold with a protein chain where the N-terminal half is left-handed and the C-terminal half right-handedly folded around a copper(I)-sulfur cluster. As seen with other MTs, the protein lacks definable secondary structural elements; however, the polypeptide fold is unique. The metal coordination and the cysteine spacing defines this unique fold. NcMT is only the second MT in the copper-bound form to be structurally characterized and the first containing the -CxCxxxxxCxC- motif. This motif is found in a variety of mammalian MTs and metalloregulatory proteins. The in vitro formation of the Cu(6)NcMT identical to the native Cu(6)NcMT was dependent upon the prior formation of the Zn(3)NcMT and its titration with Cu(I). The enhanced sensitivity and resolution of the 800 MHz (1)H-NMR spectral data permitted the 3D structure determination of the polypeptide backbone without the substitution and utilization of the NMR active spin 1/2 metals such as (113)Cd and (109)Ag. These restraints have been necessary to establish specific metal to cysteine restraints in 3D structural studies on this family of proteins when using lower field, less sensitive (1)H-NMR spectral data. The accuracy of the structure calculated without these constraints is, however, supported by the similarities of the 800 MHz structures of the alpha-domain of mouse MT1 compared to the one recalculated without metal-cysteine connectivities.
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(as it appears on PubMed at http://www.pubmed.gov), where 15511227 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15511227}}
==About this Structure==
==About this Structure==
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1T2Y is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T2Y OCA].
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1T2Y is a [[Single protein]] structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1T2Y OCA].
==Reference==
==Reference==
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[[Category: No secondary structural element]]
[[Category: No secondary structural element]]
[[Category: Protein fold]]
[[Category: Protein fold]]
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Revision as of 23:59, 28 July 2008

Image:1t2y.png

Template:STRUCTURE 1t2y

NMR solution structure of the protein part of Cu6-Neurospora crassa MT

Template:ABSTRACT PUBMED 15511227

About this Structure

1T2Y is a Single protein structure. Full experimental information is available from OCA.

Reference

Solution structure of Cu6 metallothionein from the fungus Neurospora crassa., Cobine PA, McKay RT, Zangger K, Dameron CT, Armitage IM, Eur J Biochem. 2004 Nov;271(21):4213-21. PMID:15511227

Page seeded by OCA on Tue Jul 29 02:59:10 2008

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