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2DN3

1.25A resolution crystal structure of human hemoglobin in the carbonmonoxy form

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Hemoglobin alpha subunitpolymer14115150.41UniProt (P69905)
Pfam (PF00042)
Homo sapiens (human)Hemoglobin alpha chain, Alpha-globin
2B
(B)
Hemoglobin beta subunitpolymer14615890.21UniProt (P68871)
Pfam (PF00042)
Homo sapiens (human)Hemoglobin beta chain, Beta-globin
3C, E
(A, B)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.52Chemie (HEM)
4D, F
(A, B)
CARBON MONOXIDEnon-polymer28.02Chemie (CMO)
5G, H
(A, B)
waterwater18.0212Chemie (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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