Function and Biology

The human nucleosome structure

Source organism: Homo sapiens
Biochemical function: protein heterodimerization activity
Biological process: chromatin organization
Cellular component: chromosome

Sequence families

Pfam Protein families (Pfam)
PF00125
Domain description: Core histone H2A/H2B/H3/H4
Occurring in:
  1. Histone H3.1
  2. Histone H2A type 1-B/E
  3. Histone H2B type 1-J
The deposited structure of PDB entry 3afa contains 2 copies of Pfam domain PF00125 (Core histone H2A/H2B/H3/H4) in Histone H3.1. Showing 1 copy in chain E.
The deposited structure of PDB entry 3afa contains 2 copies of Pfam domain PF00125 (Core histone H2A/H2B/H3/H4) in Histone H2A type 1-B/E. Showing 1 copy in chain C.
The deposited structure of PDB entry 3afa contains 2 copies of Pfam domain PF00125 (Core histone H2A/H2B/H3/H4) in Histone H2B type 1-J. Showing 1 copy in chain D.

PF16211
Domain description: C-terminus of histone H2A
Occurring in:
  1. Histone H2A type 1-B/E
The deposited structure of PDB entry 3afa contains 2 copies of Pfam domain PF16211 (C-terminus of histone H2A) in Histone H2A type 1-B/E. Showing 1 copy in chain C.

PF15511
Domain description: Centromere kinetochore component CENP-T histone fold
Occurring in:
  1. Histone H4
The deposited structure of PDB entry 3afa contains 2 copies of Pfam domain PF15511 (Centromere kinetochore component CENP-T histone fold) in Histone H4. Showing 1 copy in chain F.

InterPro InterPro annotations
IPR000164
Domain description: Histone H3/CENP-A
Occurring in:
  1. Histone H3.1
IPR000558
Domain description: Histone H2B
Occurring in:
  1. Histone H2B type 1-J
IPR002119
Domain description: Histone H2A
Occurring in:
  1. Histone H2A type 1-B/E
IPR001951
Domain description: Histone H4
Occurring in:
  1. Histone H4
IPR009072
Domain description: Histone-fold
Occurring in:
  1. Histone H3.1
  2. Histone H4
  3. Histone H2A type 1-B/E
  4. Histone H2B type 1-J
IPR007125
Domain description: Histone H2A/H2B/H3
Occurring in:
  1. Histone H3.1
  2. Histone H2A type 1-B/E
  3. Histone H2B type 1-J
IPR032454
Domain description: Histone H2A, C-terminal domain
Occurring in:
  1. Histone H2A type 1-B/E
IPR032458
Domain description: Histone H2A conserved site
Occurring in:
  1. Histone H2A type 1-B/E
IPR035425
Domain description: CENP-T/Histone H4, histone fold
Occurring in:
  1. Histone H4
IPR004823
Domain description: TATA box binding protein associated factor (TAF), histone-like fold domain
Occurring in:
  1. Histone H4
IPR019809
Domain description: Histone H4, conserved site
Occurring in:
  1. Histone H4

Structure domain

CATH CATH domain
1.10.20.10
Class: Mainly Alpha
Architecture: Orthogonal Bundle
Topology: Histone, subunit A
Homology: Histone, subunit A
Occurring in:
  1. Histone H3.1
  2. Histone H4
  3. Histone H2A type 1-B/E
  4. Histone H2B type 1-J
The deposited structure of PDB entry 3afa contains 2 copies of CATH domain 1.10.20.10 (Histone, subunit A) in Histone H3.1. Showing 1 copy in chain E.
The deposited structure of PDB entry 3afa contains 2 copies of CATH domain 1.10.20.10 (Histone, subunit A) in Histone H4. Showing 1 copy in chain F.
The deposited structure of PDB entry 3afa contains 2 copies of CATH domain 1.10.20.10 (Histone, subunit A) in Histone H2A type 1-B/E. Showing 1 copy in chain C.
The deposited structure of PDB entry 3afa contains 2 copies of CATH domain 1.10.20.10 (Histone, subunit A) in Histone H2B type 1-J. Showing 1 copy in chain D.