3AQ9 Oxygen Binding date Oct 25, 2010
title Crystal Structure Of Truncated Hemoglobin From Tetrahymena P Q50e Mutant, Fe(III) Form
authors J.Igarashi, K.Kobayashi, A.Matsuoka
compound source
Molecule: Group 1 Truncated Hemoglobin
Chain: A, B
Engineered: Yes
Mutation: Yes
Organism_scientific: Tetrahymena Pyriformis
Organism_taxid: 5908
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Bl21(De3) Codon Plus Ril
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet-21c(+)
symmetry Space Group: P 65 2 2
R_factor 0.187 R_Free 0.207
length a length b length c angle alpha angle beta angle gamma
69.125 69.125 352.579 90.00 90.00 120.00
method X-Ray Diffractionresolution 1.74 Å
ligand HEM enzyme
A, B

Primary referenceA hydrogen-bonding network formed by the B10-E7-E11 residues of a truncated hemoglobin from Tetrahymena pyriformis is critical for stability of bound oxygen and nitric oxide detoxification., Igarashi J, Kobayashi K, Matsuoka A, J Biol Inorg Chem. 2011 Feb 5. PMID:21298303
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (94 Kb) [Save to disk]
  • Biological Unit Coordinates (3aq9.pdb1.gz) 45 Kb
  • Biological Unit Coordinates (3aq9.pdb2.gz) 45 Kb
  • LPC: Ligand-Protein Contacts for 3AQ9
  • CSU: Contacts of Structural Units for 3AQ9
  • Structure Factors (351 Kb)
  • Retrieve 3AQ9 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3AQ9 from S2C, [Save to disk]
  • Re-refined 3aq9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3AQ9 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 3AQ9
  • Cartoon representation from PDB Cartoon
  • 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
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 3AQ9, from MSDmotif at EBI
  • Fold representative 3aq9 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3aq9_B] [3aq9_A] [3aq9]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Other resources with information on 3AQ9
  • Community annotation for 3AQ9 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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