1RJU

Crystal structure of a truncated form of yeast copper thionein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.44 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Crystal Structure of Yeast Copper Thionein: the solution of a long lasting Enigma.

Calderone, V.Dolderer, B.Hartmann, H.J.Echner, H.Luchinat, C.Del Bianco, C.Mangani, S.Weser, U.

(2005) Proc Natl Acad Sci U S A 102: 51-56

  • DOI: 10.1073/pnas.0408254101
  • Primary Citation of Related Structures:  
    1RJU

  • PubMed Abstract: 
  • 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 ...

    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.


    Related Citations: 
    • High resolution solution structure of the protein part of Cu7 metallothionein
      Bertini, I., Hartmann, H.J., Klein, T., Liu, G., Luchinat, C., Weser, U.
      (2000) Eur J Biochem 267: 1008
    • The Cu(I)(7) cluster in yeast copper thionein survives major shortening of the polypeptide backbone as deduced from electronic absorption, circular dichroism, luminescence and (1)H NMR
      Luchinat, C., Dolderer, B., Del Bianco, C., Echner, H., Hartmann, H.J., Voelter, W., Weser, U.
      (2003) J Biol Inorg Chem 8: 353

    Organizational Affiliation

    Department of Chemistry, University of Siena, Via Aldo Moro, 53100 Siena, Italy.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MetallothioneinA [auth V]36N/AMutation(s): 0 
UniProt
Find proteins for P0CX80 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P0CX80 
Go to UniProtKB:  P0CX80
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.44 Å
  • R-Value Free: 0.171 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 
  • Space Group: P 43 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.167α = 90
b = 62.167β = 90
c = 62.167γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling
SOLVEphasing
RESOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-12-07
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance