1NAQ

Crystal structure of CUTA1 from E.coli at 1.7 A resolution

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.207 

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This is version 1.3 of the entry. See complete history. 


Literature

The evolutionarily conserved trimeric structure of CutA1 proteins suggests a role in signal transduction.

Arnesano, F., Banci, L., Benvenuti, M., Bertini, I., Calderone, V., Mangani, S., Viezzoli, M.S.

(2003) J Biol Chem 278: 45999-46006

  • DOI: 10.1074/jbc.M304398200
  • Primary Citation of Related Structures:  
    1NAQ, 1OSC

  • PubMed Abstract: 

    • CutA1 are a protein family present in bacteria, plants, and animals, including humans. Escherichia coli CutA1 is involved in copper tolerance, whereas mammalian proteins are implicated in the anchoring of acetylcholinesterase in neuronal cell membranes. The x-ray structures of CutA1 from E ...

    CutA1 are a protein family present in bacteria, plants, and animals, including humans. Escherichia coli CutA1 is involved in copper tolerance, whereas mammalian proteins are implicated in the anchoring of acetylcholinesterase in neuronal cell membranes. The x-ray structures of CutA1 from E. coli and rat were determined. Both proteins are trimeric in the crystals and in solution through an inter-subunit beta-sheet formation. Each subunit consists of a ferredoxin-like (beta1alpha1beta2beta3alpha2beta4) fold with an additional strand (beta5), a C-terminal helix (alpha3), and an unusual extended beta-hairpin involving strands beta2 and beta3. The bacterial CutA1 is able to bind copper(II) in vitro through His2Cys coordination in a type II water-accessible site, whereas the rat protein precipitates in the presence of copper(II). The evolutionarily conserved trimeric assembly of CutA1 is reminiscent of the architecture of PII signal transduction proteins. This similarity suggests an intriguing role of CutA1 proteins in signal transduction through allosteric communications between subunits.

    Related Citations: 
    • STRUCTURE OF PROTEIN TM1056, CUTA
      SAVCHENKO, A., ZHANG, R., JOACHIMIAK, A., EDWARDS, A., AKARINA, T.
      () To be published --: --
    Organizational Affiliation: 

    Magnetic Resonance Center (CERM) and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino, Florence, Italy.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Periplasmic divalent cation tolerance protein cutA
A, B, C, D, E, F
A, B, C, D, E, F
112Escherichia coliMutation(s): 0 
Gene Names: cutA
UniProt
Find proteins for P69488 (Escherichia coli (strain K12))
Explore P69488 
Go to UniProtKB:  P69488
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP69488
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MBO
Query on MBO
Download Ideal Coordinates CCD File 
H [auth A],
I [auth A],
K [auth B],
L [auth B],
O [auth C],
H [auth A],
I [auth A],
K [auth B],
L [auth B],
O [auth C],
R [auth D],
T [auth E],
U [auth E],
W [auth F],
X [auth F]
MERCURIBENZOIC ACID
C7 H5 Hg O2
FVFZSVRSDNUCGG-UHFFFAOYSA-N		 Ligand Interaction
HG
Query on HG
Download Ideal Coordinates CCD File 
G [auth A],
J [auth B],
M [auth C],
N [auth C],
P [auth D],
G [auth A],
J [auth B],
M [auth C],
N [auth C],
P [auth D],
Q [auth D],
S [auth E],
V [auth F]
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.207 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.989α = 90
b = 89.563β = 90
c = 122.294γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
SOLVEphasing
RESOLVEmodel building
REFMACrefinement
CCP4data scaling
RESOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-25
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description