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1IRD

Crystal Structure of Human Carbonmonoxy-Haemoglobin at 1.25 A Resolution

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Hemoglobin alpha chainpolymer14115150.41UniProt (P69905)
Pfam (PF00042)
Homo sapiens (human)
2B
(B)
Hemoglobin beta chainpolymer14615890.21UniProt (P68871)
Pfam (PF00042)
Homo sapiens (human)
3C, E
(A, B)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.52Chemie (HEM)
4D, F
(A, B)
CARBON MONOXIDEnon-polymer28.02Chemie (CMO)
5G, H
(A, B)
waterwater18.0325Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight31040.6
Non-Polymers*Number of molecules4
Total formula weight1289.0
All*Total formula weight32329.5
*Water molecules are not included.

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PDB entries from 2025-06-11

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