1T2Y

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


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Solution structure of Cu metallothionein from the fungus Neurospora crassa

Cobine, P.A.McKay, R.T.Zangger, K.Dameron, C.T.Armitage, I.M.

(2004) Eur J Biochem 271: 4213-4221

  • DOI: 10.1111/j.1432-1033.2004.04361.x
  • Primary Citation of Related Structures:  
    1T2Y

  • PubMed Abstract: 
  • 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- ...

    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.


    Organizational Affiliation

    Health Science Center, University of Utah, Salt Lake City, UT, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MetallothioneinA25N/AMutation(s): 0 
Find proteins for P02807 (Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987))
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Go to UniProtKB:  P02807
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 
  • OLDERADO: 1T2Y Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-11-23
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance