1IRD

Crystal Structure of Human Carbonmonoxy-Haemoglobin at 1.25 A Resolution

• PDB DOI: https://doi.org/10.2210/pdb1IRD/pdb

• Classification: OXYGEN STORAGE/TRANSPORT
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2001-09-27 Released: 2001-10-17 
• Deposition Author(s): Park, S.-Y., Tame, J.R.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.25 Å
• R-Value Free: 0.214 
• R-Value Work: 0.163 

Starting Model: experimental

Literature

Carbonmonoxy-Haemoglobin at 1.25 A Resolution

Park, S.-Y., Tame, J.R.H.

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 and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 32.33 kDa 
• Atom Count: 2,607 
• 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	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P69905 (Homo sapiens) Go to UniProtKB:  P69905
PHAROS:  P69905 GTEx:  ENSG00000188536 ENSG00000206172

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Hemoglobin beta chain	B	146	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P68871 (Homo sapiens) Go to UniProtKB:  P68871
PHAROS:  P68871 GTEx:  ENSG00000244734

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	C [auth A], E [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
CMO	D [auth A], F [auth B]	CARBON MONOXIDE C O UGFAIRIUMAVXCW-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.25 Å
• R-Value Free: 0.214 
• R-Value Work: 0.163 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 53.27	α = 90
b = 53.27	β = 90
c = 190.78	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
SHELXL-97	refinement
MOSFLM	data reduction
CCP4	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-10-17 
Deposition Author(s): Park, S.-Y., Tame, J.R.H.

Revision History  

• Version 1.0: 2001-10-17
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-07-24
  Changes: Advisory, Data collection, Derived calculations
• Version 1.4: 2019-08-21
  Changes: Data collection, Derived calculations
• Version 1.5: 2022-07-06
  Changes: Database references, Derived calculations
• Version 1.6: 2023-10-25
  Changes: Data collection, Refinement description