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4NI0

Quaternary R3 CO-liganded hemoglobin structure in complex with a thiol containing compound

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Hemoglobin subunit alphapolymer14115150.41UniProt (P69905)
Pfam (PF00042)
Homo sapiens (human)Alpha-globin, Hemoglobin alpha chain
2B
(B)
Hemoglobin subunit betapolymer14615890.21UniProt (P68871)
Pfam (PF00042)
Homo sapiens (human)Beta-globin, Hemoglobin beta chain, LVV-hemorphin-7, Spinorphin
3C, K
(A, B)
CARBON MONOXIDEnon-polymer28.02Chemie (CMO)
4D, L
(A, B)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.52Chemie (HEM)
5E, F, M, N
(A, B)
5-[(2S)-2,3-dihydro-1,4-benzodioxin-2-yl]-2,4-dihydro-3H-1,2,4-triazole-3-thionenon-polymer235.34Chemie (2P3)
6G, H, I
(A)
TOLUENEnon-polymer92.13Chemie (MBN)
7J, O, P
(A, B)
PHOSPHATE IONnon-polymer95.03Chemie (PO4)
8Q, R
(A, B)
waterwater18.0158Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight31040.6
Non-Polymers*Number of molecules14
Total formula weight2791.4
All*Total formula weight33831.9
*Water molecules are not included.

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PDB entries from 2025-06-11

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