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X-RAY STRUCTURE OF THE NUCLEOSOME CORE PARTICLE AT 2.5 A RESOLUTION

X-ray diffraction
2.5Å resolution
PDB entry 1eqz coloured by chain, front view.
PDB entry 1eqz coloured by chain, side view.
PDB entry 1eqz coloured by chain, top view.
Source organism: Gallus gallus
Assembly composition:
hetero decamer (preferred)
Entry contents: 4 distinct polypeptide molecules
1 distinct DNA molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Nucleosome, Histone and DNA
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Multimeric state: hetero decamer
Accessible surface area: 82139.58 Å2
Buried surface area: 63758.06 Å2
Dissociation area: 4,803.58 Å2
Dissociation energy (ΔGdiss): 71.97 kcal/mol
Dissociation entropy (TΔSdiss): 14.67 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-113763

Macromolecules

Histone H2A-IV
Chains: A, E
Length: 129 amino acids
Theoretical weight: 13.97 KDa
Source organism: Gallus gallus
UniProt:
  • Canonical: P02263 (Residues: 1-129; Coverage: 100%)
Pfam:
InterPro:
CATH: Histone, subunit A
SCOP: Nucleosome core histones
Histone H2A-IV in PDB entry 1eqz, assembly 1, front view.
Histone H2A-IV in PDB entry 1eqz, assembly 1, side view.
Histone H2A-IV in PDB entry 1eqz, assembly 1, top view.
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Histone H2B 7
Chains: B, F
Length: 126 amino acids
Theoretical weight: 13.95 KDa
Source organism: Gallus gallus
UniProt:
  • Canonical: P0C1H5 (Residues: 1-126; Coverage: 100%)
Gene name: H2B-VII
Pfam: Core histone H2A/H2B/H3/H4
InterPro:
CATH: Histone, subunit A
SCOP: Nucleosome core histones
Histone H2B 7 in PDB entry 1eqz, assembly 1, front view.
Histone H2B 7 in PDB entry 1eqz, assembly 1, side view.
Histone H2B 7 in PDB entry 1eqz, assembly 1, top view.
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Histone H3.2
Chains: C, G
Length: 136 amino acids
Theoretical weight: 15.42 KDa
Source organism: Gallus gallus
UniProt:
  • Canonical: P84229 (Residues: 1-136; Coverage: 100%)
Gene names: H3-I, H3-II, H3-III, H3-IV, H3-V, H3-VI, H3-VII, H3-VIII
Pfam: Core histone H2A/H2B/H3/H4
InterPro:
CATH: Histone, subunit A
SCOP: Nucleosome core histones
Histone H3.2 in PDB entry 1eqz, assembly 1, front view.
Histone H3.2 in PDB entry 1eqz, assembly 1, side view.
Histone H3.2 in PDB entry 1eqz, assembly 1, top view.
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Histone H4
Chains: D, H
Length: 103 amino acids
Theoretical weight: 11.39 KDa
Source organism: Gallus gallus
UniProt:
  • Canonical: P62801 (Residues: 1-103; Coverage: 100%)
Gene names: H4-I, H4-II, H4-III, H4-IV, H4-V, H4-VI, H4-VII
Pfam: Centromere kinetochore component CENP-T histone fold
InterPro:
CATH: Histone, subunit A
SCOP: Nucleosome core histones
Histone H4 in PDB entry 1eqz, assembly 1, front view.
Histone H4 in PDB entry 1eqz, assembly 1, side view.
Histone H4 in PDB entry 1eqz, assembly 1, top view.
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DNA chains I, J
Name: 146 NUCLEOTIDES LONG DNA
Representative chains: I, J
Length: 146 nucleotides
Theoretical weight: 45.05 KDa
146 NUCLEOTIDES LONG DNA in PDB entry 1eqz, assembly 1, front view.
146 NUCLEOTIDES LONG DNA in PDB entry 1eqz, assembly 1, side view.
146 NUCLEOTIDES LONG DNA in PDB entry 1eqz, assembly 1, top view.
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