1HR3

STRUCTURE OF TRIMERIC HAEMERYTHRIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 5.5 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of trimeric haemerythrin.

Smith, J.L.Hendrickson, W.A.Addison, A.W.

(1983) Nature 303: 86-88


  • PubMed Abstract: 
  • Several simplifying structural principles have been developed from the considerable data contained in the three-dimensional structures of proteins determined in the past two decades. One of these is based on the observation that particular folding mo ...

    Several simplifying structural principles have been developed from the considerable data contained in the three-dimensional structures of proteins determined in the past two decades. One of these is based on the observation that particular folding motifs often occur in a variety of structural and functional settings. The compact bundle of four antiparallel alpha-helices, first seen in the structure of myohaemerythrin, is an example. Several non-haemerythrin proteins have since been found to have the same folding pattern, and haemerythrins themselves exist in a wide variety of quaternary arrangements. The unusual ability of the haemerythrin fold to associate as dimers, trimers, tetramers, octamers or higher aggregates provides an opportunity for examining structural diversity in subunit association. We have used X-ray crystallography to study the subunit structure of trimeric haemerythrin from a Siphonosoma species. We report here that the pattern of intersubunit helix-helix interactions differs from the most common mode of association of other helix-bundle proteins. In a novel approach to structure analysis at low resolution, experimental phases for the structure determination were based on anomalous scattering from the iron atoms native to haemerythrin, using the new resolved-anomalous phasing procedure.


    Related Citations: 
    • Chemistry of Phascolosoma Lurco Hemerythrin
      Addison, A.W.,Bruce, R.E.
      (1977) Arch.Biochem.Biophys. 183: 328



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEMERYTHRIN
A, B, C
118N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FEA
Query on FEA

Download SDF File 
Download CCD File 
A, B, C
MONOAZIDO-MU-OXO-DIIRON
Fe2 N3 O
GTUZFHRZTDZJHZ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
UNK
Query on UNK
A, B, C
L-PEPTIDE LINKINGC4 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 5.5 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 80.310α = 90.00
b = 45.110β = 104.80
c = 63.580γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1983-06-10
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other