PDBe 4r8p

X-ray diffraction
3.28Å resolution

Crystal structure of the Ring1B/Bmi1/UbcH5c PRC1 ubiquitylation module bound to the nucleosome core particle

Released:

Function and Biology Details

Reactions catalysed:
S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine = [E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine
(1a) S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [(E3-independent) E2 ubiquitin-conjugating enzyme]-L-cysteine = [E1 ubiquitin-activating enzyme]-L-cysteine + S-monoubiquitinyl-[(E3-independent) ubiquitin-conjugating enzyme]-L-cysteine
S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
hetero 14-mer (preferred)
Entry contents:
6 distinct polypeptide molecules
2 distinct DNA molecules
Macromolecules (8 distinct):
Histone H3.2 Chains: A, E
Molecule details ›
Chains: A, E
Length: 135 amino acids
Theoretical weight: 15.3 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P84233 (Residues: 2-136; Coverage: 99%)
Structure domains: Histone, subunit A
Histone H4 Chains: B, F
Molecule details ›
Chains: B, F
Length: 102 amino acids
Theoretical weight: 11.26 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P62799 (Residues: 2-103; Coverage: 99%)
Sequence domains: Centromere kinetochore component CENP-T histone fold
Structure domains: Histone, subunit A
Histone H2A type 1 Chains: C, G
Molecule details ›
Chains: C, G
Length: 129 amino acids
Theoretical weight: 13.98 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P06897 (Residues: 2-130; Coverage: 99%)
Sequence domains:
Structure domains: Histone, subunit A
Histone H2B 1.1 Chains: D, H
Molecule details ›
Chains: D, H
Length: 122 amino acids
Theoretical weight: 13.52 KDa
Source organism: Xenopus laevis
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P02281 (Residues: 5-126; Coverage: 97%)
Structure domains: Histone, subunit A
Polycomb complex protein BMI-1 Chains: K, M
Molecule details ›
Chains: K, M
Length: 110 amino acids
Theoretical weight: 12.6 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P35226 (Residues: 2-109; Coverage: 33%)
Gene names: BMI1, PCGF4, RNF51
Sequence domains: Zinc finger, C3HC4 type (RING finger)
Structure domains: Zinc/RING finger domain, C3HC4 (zinc finger)
E3 ubiquitin-protein ligase RING2; Ubiquitin-conjugating enzyme E2 D3 Chains: L, N
Molecule details ›
Chains: L, N
Length: 268 amino acids
Theoretical weight: 30.12 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: Q99496 (Residues: 2-116; Coverage: 34%)
  • Canonical: P61077 (Residues: 2-147; Coverage: 99%)
  • nullnull
Gene names: BAP1, DING, HIPI3, RING1B, RNF2, UBC5C, UBCH5C, UBE2D3
Sequence domains:
DNA (147-mer) Chain: I
Molecule details ›
Chain: I
Length: 147 nucleotides
Theoretical weight: 45.14 KDa
DNA (147-mer) Chain: J
Molecule details ›
Chain: J
Length: 147 nucleotides
Theoretical weight: 45.61 KDa

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 24-ID-E
Spacegroup: C2221
Unit cell:
a: 104.923Å b: 180.049Å c: 375.251Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.199 0.197 0.245
Expression systems:
  • Escherichia coli BL21(DE3)
  • Escherichia coli