3WTG

Crystal structure of Emu (dromaius novaehollandiae) hemoglobin at 2.3 angstrom resolution

• PDB DOI: https://doi.org/10.2210/pdb3WTG/pdb

• Classification: OXYGEN TRANSPORT
• Organism(s): Dromaius novaehollandiae
• Mutation(s): No 


• Deposited: 2014-04-11 Released: 2014-07-02 
• Deposition Author(s): Abubakkar, M.M., Maheshwaran, V., Ponnuswamy, M.N., Saraboji, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.257 
• R-Value Work: 0.192 
• R-Value Observed: 0.196 

Literature

Purification and preliminary structural studies of hemoglobin from high oxygen affinity species Emu (Dromaius novaehollandiae) at neutral pH

Abubakkar, M.M., Saraboji, K., Ponnuswamy, M.N.

To be published.

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: 66.4 kDa 
• Atom Count: 4,959 
• Modelled Residue Count: 568 
• Deposited Residue Count: 576 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin subunit alpha-A	A, C	142	Dromaius novaehollandiae	Mutation(s): 0
UniProt
Find proteins for C6L8R0 (Dromaius novaehollandiae) Explore C6L8R0  Go to UniProtKB:  C6L8R0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin	B, D	146	Dromaius novaehollandiae	Mutation(s): 0
UniProt
Find proteins for A0A075B5G0 (Dromaius novaehollandiae) Explore A0A075B5G0  Go to UniProtKB:  A0A075B5G0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	E [auth A], G [auth B], I [auth C], K [auth D]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
OXY	F [auth A], H [auth B], J [auth C], L [auth D]	OXYGEN MOLECULE O2 MYMOFIZGZYHOMD-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.257 
• R-Value Work: 0.192 
• R-Value Observed: 0.196 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.271	α = 90
b = 80.01	β = 90
c = 103.559	γ = 90

Software Package:

Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
REFMAC	refinement
AUTOMAR	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-07-02 
Deposition Author(s): Abubakkar, M.M., Maheshwaran, V., Ponnuswamy, M.N., Saraboji, K.

Revision History  

• Version 1.0: 2014-07-02
  Type: Initial release
  
• Version 1.1: 2023-11-08
  Changes: Data collection, Database references, Derived calculations, Refinement description