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Structures and oxygen affinities of crystalline human hemoglobin C (beta6 Lys) in the R quaternary structures

X-ray diffraction
1.401Å resolution
PDB entry 3s66 coloured by chain, front view.
PDB entry 3s66 coloured by chain, side view.
PDB entry 3s66 coloured by chain, top view.
Source organism: Homo sapiens
Assembly composition:
hetero tetramer (preferred)
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Hemoglobin HbA complex
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Multimeric state: hetero tetramer
Accessible surface area: 23456.48 Å2
Buried surface area: 11627.14 Å2
Dissociation area: 3,151.01 Å2
Dissociation energy (ΔGdiss): 2.16 kcal/mol
Dissociation entropy (TΔSdiss): 36.61 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-159519
Complex Portal ID: CPX-2158

Macromolecules

Hemoglobin subunit alpha
Chain: A
Length: 141 amino acids
Theoretical weight: 15.15 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P69905 (Residues: 2-142; Coverage: 99%)
Gene names: HBA1, HBA2
Pfam: Globin
InterPro:
CATH: Globins
Hemoglobin subunit alpha in PDB entry 3s66, assembly 1, front view.
Hemoglobin subunit alpha in PDB entry 3s66, assembly 1, side view.
Hemoglobin subunit alpha in PDB entry 3s66, assembly 1, top view.
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Hemoglobin subunit beta
Chain: B
Length: 146 amino acids
Theoretical weight: 15.89 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P68871 (Residues: 2-147; Coverage: 99%)
Gene name: HBB
Pfam: Globin
InterPro:
CATH: Globins
Hemoglobin subunit beta in PDB entry 3s66, assembly 1, front view.
Hemoglobin subunit beta in PDB entry 3s66, assembly 1, side view.
Hemoglobin subunit beta in PDB entry 3s66, assembly 1, top view.
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