1UKU

Crystal Structure of Pyrococcus horikoshii CutA1 Complexed with Cu2+

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.162 

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This is version 1.2 of the entry. See complete history. 

Literature

Structural implications for heavy metal-induced reversible assembly and aggregation of a protein: the case of Pyrococcus horikoshii CutA.

Tanaka, Y., Tsumoto, K., Nakanishi, T., Yasutake, Y., Sakai, N., Yao, M., Tanaka, I., Kumagai, I.

(2004) Febs Lett. 556: 167-174

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • CutA is a small protein that appears to be involved in the mechanism of divalent metal cation tolerance in microorganisms. Here we report the crystal structure of Pyrococcus horikoshii CutA (PhoCutA), with and without Cu(2+), and its metal-binding pr ...

    CutA is a small protein that appears to be involved in the mechanism of divalent metal cation tolerance in microorganisms. Here we report the crystal structure of Pyrococcus horikoshii CutA (PhoCutA), with and without Cu(2+), and its metal-binding properties. Crystallographic analyses revealed that PhoCutA forms a stable trimeric structure with intertwined antiparallel beta-strands. The crystal structure of the Cu(2+)-PhoCutA complex shows that the Cu(2+) is located at a trimer-trimer interface and is recognized by the side chains of one Asp(48) from each trimer. In an in vitro experiment, PhoCutA bound to several heavy metals, most of which led to reversible aggregation of the protein; i.e. the aggregates could be completely solubilized by addition of ethylenediamine tetraacetic acid (EDTA) or dialysis against metal free buffer. Substitution of Asp(48) with Ala led to a decrease in the amount of aggregates, suggesting the significant contribution of Asp(48) to the reversible aggregation. To the best of our knowledge, this is the first report which provides the structural evidence for heavy metal-induced multimerization of a protein.

    Organizational Affiliation: 

    Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba-yama 07, Aoba-ku, 980-8579, Sendai, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
periplasmic divalent cation tolerance protein CutA
A
102Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3)Mutation(s): 0 
Gene Names: cutA
Find proteins for O58720 (Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3))
Go to UniProtKB:  O58720
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CU
Query on CU
Download SDF File 
Download CCD File 
A
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.162 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 52.242α = 90.00
b = 52.242β = 90.00
c = 54.111γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
DENZOdata reduction
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-01-13
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Source and taxonomy, Version format compliance