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9VIB

cryo-EM structure of human haemoglobin in the R2 conformation

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Hemoglobin subunit alphapolymer14215281.51UniProt (P69905)
Pfam (PF00042)
Homo sapiens (human)Alpha-globin,Hemoglobin alpha chain
2B
(B)
Hemoglobin subunit betapolymer14716021.41UniProt (P68871)
Pfam (PF00042)
Homo sapiens (human)Beta-globin,Hemoglobin beta chain
3C, E
(A, B)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.52Chemie (HEM)
4D, F
(A, B)
CARBON MONOXIDEnon-polymer28.02Chemie (CMO)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight31302.9
Non-Polymers*Number of molecules4
Total formula weight1289.0
All*Total formula weight32591.9
*Water molecules are not included.

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PDB entries from 2025-07-30

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