1Y8I

Horse methemoglobin low salt, PH 7.0 (98% relative humidity)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A new relaxed state in horse methemoglobin characterized by crystallographic studies.

Sankaranarayanan, R.Biswal, B.K.Vijayan, M.

(2005) Proteins 60: 547-551

  • DOI: 10.1002/prot.20510
  • Primary Citation of Related Structures:  
  • Also Cited By: 2ZLX, 2ZLW, 2ZLV, 2ZLU, 2ZLT

  • PubMed Abstract: 
  • A new relaxed state has been characterized in the crystals of horse methemoglobin grown at neutral pH at low ionic concentration and their low humidity variants. The crystals provide an example for improvement in X-ray diffraction quality with reduce ...

    A new relaxed state has been characterized in the crystals of horse methemoglobin grown at neutral pH at low ionic concentration and their low humidity variants. The crystals provide an example for improvement in X-ray diffraction quality with reduced solvent content. Only the classical R state has been so far observed in liganded horse hemoglobin. The state characterized in the present study lies in between the R state and the R2 state characterized earlier in liganded human hemoglobin. The results presented here, along with those of earlier studies, suggest that relaxed and tense hemoglobin can access ensembles of states.


    Related Citations: 
    • Structure of Human Methaemoglobin: The Variation of a Theme
      Biswal, B.K.,Vijayan, M.
      (2001) Curr.Sci. 81: 1100
    • Structures of Human Oxy- and Deoxyhaemoglobin at Different Levels of Humidity: Variability in the T State
      Biswal, B.K.,Vijayan, M.
      (2002) Acta Crystallogr.,Sect.D 58: 1155


    Organizational Affiliation

    Molecular Biophysics Unit, Indian Institute of Science, Bangalore, India.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hemoglobin alpha chains
A, C
141Equus caballusMutation(s): 0 
Gene Names: HBA
Find proteins for P01958 (Equus caballus)
Go to UniProtKB:  P01958
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Hemoglobin beta chain
B, D
146Equus caballusMutation(s): 0 
Gene Names: HBB
Find proteins for P02062 (Equus caballus)
Go to Gene View: HBB
Go to UniProtKB:  P02062
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A, B, C, D
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.798α = 90.00
b = 80.907β = 90.00
c = 112.159γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-07-26
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance