2NXQ Metal Binding Protein date Nov 18, 2006
title Crystal Structure Of Calcium Binding Protein 1 From Entamoeb Histolytica: A Novel Arrangement Of Ef Hand Motifs
authors S.Kumar, N.Padhan, N.Alam, S.Gourinath
compound source
Molecule: Calcium-Binding Protein
Chain: A, B
Synonym: Cabp
Engineered: Yes
 Organism_scientific: Entamoeba Histolytica
Organism_taxid: 294381
Strain: Hm-1:Imss
Expression_system: Escherichia Coli Bl21
Expression_system_taxid: 511693
Expression_system_strain: Bl21
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet-3c
symmetry Space Group: P 63
R_factor 0.258 R_Free 0.282
crystal
cell
length a length b length c angle alpha angle beta angle gamma
95.250 95.250 64.996 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.40 Å
ligand ACT, CA enzyme
Gene
Ontology
ChainFunctionProcessComponent
A, B


Primary referenceCrystal structure of calcium binding protein-1 from Entamoeba histolytica: A novel arrangement of EF hand motifs., Kumar S, Padhan N, Alam N, Gourinath S, Proteins. 2007 Jun 6;68(4):990-998. PMID:17554780
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (28 Kb) [Save to disk]
  • Biological Unit Coordinates (2nxq.pdb1.gz) 33 Kb
  • Biological Unit Coordinates (2nxq.pdb2.gz) 33 Kb
  • Biological Unit Coordinates (2nxq.pdb3.gz) 64 Kb
  • Biological Unit Coordinates (2nxq.pdb4.gz) 12 Kb
  • Biological Unit Coordinates (2nxq.pdb5.gz) 12 Kb
  • LPC: Ligand-Protein Contacts for 2NXQ
  • CSU: Contacts of Structural Units for 2NXQ
  • Likely Quarternary Molecular Structure file(s) for 2NXQ
  • Structure Factors (160 Kb)
  • Retrieve 2NXQ in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2NXQ from S2C, [Save to disk]
  • Re-refined 2nxq structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
    • View 2NXQ in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
    • Visual 3D analysis of 2NXQ
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 2NXQ, from MSDmotif at EBI
    • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2nxq] [2nxq_B] [2nxq_A]
  • SWISS-PROT database: [P38505]
  • Domain organization of [CALBP_ENTHI] by SWISSPFAM
  • Domain found in 2NXQ: [EFh ] by SMART
    • Other resources with information on 2NXQ
  • Community annotation for 2NXQ at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
    • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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