4E98

Crystal structure of possible CutA1 divalent ion tolerance protein from Cryptosporidium parvum Iowa II


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of a CutA1 divalent-cation tolerance protein from Cryptosporidium parvum, the protozoal parasite responsible for cryptosporidiosis.

Buchko, G.W.Abendroth, J.Clifton, M.C.Robinson, H.Zhang, Y.Hewitt, S.N.Staker, B.L.Edwards, T.E.Van Voorhis, W.C.Myler, P.J.

(2015) Acta Crystallogr F Struct Biol Commun 71: 522-530

  • DOI: 10.1107/S2053230X14028210

  • PubMed Abstract: 
  • Cryptosporidiosis is an infectious disease caused by protozoan parasites of the Cryptosporidium genus. Infection is associated with mild to severe diarrhea that usually resolves spontaneously in healthy human adults, but may lead to severe complicati ...

    Cryptosporidiosis is an infectious disease caused by protozoan parasites of the Cryptosporidium genus. Infection is associated with mild to severe diarrhea that usually resolves spontaneously in healthy human adults, but may lead to severe complications in young children and in immunocompromised patients. The genome of C. parvum contains a gene, CUTA_CRYPI, that may play a role in regulating the intracellular concentration of copper, which is a toxic element in excess. Here, the crystal structure of this CutA1 protein, Cp-CutA1, is reported at 2.0 Å resolution. As observed for other CutA1 structures, the 117-residue protein is a trimer with a core ferrodoxin-like fold. Circular dichroism spectroscopy shows little, in any, unfolding of Cp-CutA1 up to 353 K. This robustness is corroborated by (1)H-(15)N HSQC spectra at 333 K, which are characteristic of a folded protein, suggesting that NMR spectroscopy may be a useful tool to further probe the function of the CutA1 proteins. While robust, Cp-CutA1 is not as stable as the homologous protein from a hyperthermophile, perhaps owing to a wide β-bulge in β2 that protrudes Pro48 and Ser49 outside the β-sheet.


    Organizational Affiliation

    Seattle Structural Genomics Center for Infectious Disease, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CutA1 divalent ion tolerance protein
A, B, C
138Cryptosporidium parvum (strain Iowa II)Mutation(s): 0 
Find proteins for Q5CX58 (Cryptosporidium parvum (strain Iowa II))
Go to UniProtKB:  Q5CX58
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B, C
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 94.460α = 90.00
b = 55.590β = 108.21
c = 67.290γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
CBASSdata collection
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-11
    Type: Initial release
  • Version 1.1: 2012-04-18
    Type: Other
  • Version 1.2: 2015-05-06
    Type: Database references
  • Version 1.3: 2015-06-03
    Type: Database references