1S0H

Structure determination of haemoglobin from Donkey(equus asinus) at 3.0 Angstrom resolution

• PDB DOI: https://doi.org/10.2210/pdb1S0H/pdb

• Classification: OXYGEN STORAGE/TRANSPORT
• Organism(s): Equus asinus
• Mutation(s): No 


• Deposited: 2003-12-31 Released: 2005-02-01 
• Deposition Author(s): Balasundaresan, D., Ponnuswamy, M.N., Saraboji, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.285 
• R-Value Work: 0.181 
• R-Value Observed: 0.186 

Starting Model: experimental

Literature

Crystal structure of haemoglobin from donkey (Equus asinus) at 3A resolution

Balasundaresan, D., Saraboji, K., Ponnuswamy, M.N.

(2006) Biochimie 88: 719-723

• PubMed: 16488065 
• DOI: https://doi.org/10.1016/j.biochi.2006.01.001
• Primary Citation of Related Structures:  
  1S0H


• PubMed Abstract: 
  

  Haemoglobin from donkey was purified and crystallized in space group C2. The present donkey haemoglobin model comprises of two subunits alpha and beta. These alpha and beta subunits comprise of 141 and 146 amino acid residues, respectively, and the haem groups. The donkey haemoglobin differs from horse only in two amino acids of alpha-chain (His20 to Asn and Tyr24 to Phe) and these substitutions do not significantly change the secondary structural features of donkey haemoglobin. The haem group region and subunit contacts are closely resemble with that of horse methaemoglobin.

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Organizational Affiliation: 

Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai, 600025 India.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Dihedral - D2  (Explore in 3D)
Pseudo Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 32.36 kDa 
• Atom Count: 2,286 
• Modelled Residue Count: 287 
• Deposited Residue Count: 287 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin alpha chain	A	141	Equus asinus	Mutation(s): 0
UniProt
Find proteins for P01959 (Equus asinus) Explore P01959  Go to UniProtKB:  P01959

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin beta chain	B	146	Equus asinus	Mutation(s): 0
UniProt
Find proteins for D1MPT0 (Equus asinus) Explore D1MPT0  Go to UniProtKB:  D1MPT0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	C [auth A], D [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.285 
• R-Value Work: 0.181 
• R-Value Observed: 0.186 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 107.664	α = 90
b = 63.084	β = 111.75
c = 54.042	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MAR345	data collection
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-02-01 
Deposition Author(s): Balasundaresan, D., Ponnuswamy, M.N., Saraboji, K.

Revision History  

• Version 1.0: 2005-02-01
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-11
  Changes: Refinement description
• Version 1.4: 2023-10-25
  Changes: Data collection, Database references, Derived calculations, Refinement description