Structure analysis

Capturing the haemoglobin allosteric transition in a single crystal form; Crystal structure of full-liganded human haemoglobin with phosphate at 2.75 A resolution.

X-ray diffraction
2.754Å resolution
Source organism: Homo sapiens
Assembly composition:
hetero tetramer (preferred)
Entry contents: 2 distinct polypeptide molecules

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero tetramer
Accessible surface area: 23501.68 Å2
Buried surface area: 11036.78 Å2
Dissociation area: 1,395.5 Å2
Dissociation energy (ΔGdiss): 5.46 kcal/mol
Dissociation entropy (TΔSdiss): 13.65 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-159519
Complex Portal ID: CPX-2158
Assembly 2
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Multimeric state: hetero tetramer
Accessible surface area: 24087.76 Å2
Buried surface area: 10774.44 Å2
Dissociation area: 3,065.32 Å2
Dissociation energy (ΔGdiss): 5.66 kcal/mol
Dissociation entropy (TΔSdiss): 36.68 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-159519
Complex Portal ID: CPX-2158
Assembly 3
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Multimeric state: hetero tetramer
Accessible surface area: 23942.74 Å2
Buried surface area: 11011.89 Å2
Dissociation area: 3,187.7 Å2
Dissociation energy (ΔGdiss): 4.81 kcal/mol
Dissociation entropy (TΔSdiss): 36.71 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-159519
Complex Portal ID: CPX-2158

Macromolecules

Chains: A, C, E, G, I, K
Length: 141 amino acids
Theoretical weight: 15.15 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P69905 (Residues: 2-142; Coverage: 99%)
Gene names: HBA1, HBA2
Pfam: Globin
InterPro:
CATH: Globins

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Chains: B, D, F, H, J, L
Length: 146 amino acids
Theoretical weight: 15.89 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P68871 (Residues: 2-147; Coverage: 99%)
Gene name: HBB
Pfam: Globin
InterPro:
CATH: Globins

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