4h10

X-ray diffraction
2.4Å resolution

Intermolecular recognition revealed by the complex structure of human CLOCK-BMAL1 basic Helix-Loop-Helix domains with E-box DNA

Released:

Function and Biology Details

Reaction catalysed:
Acetyl-CoA + [protein]-L-lysine = CoA + [protein]-N(6)-acetyl-L-lysine

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
2 distinct polypeptide molecules
2 distinct DNA molecules
Macromolecules (4 distinct):
Aryl hydrocarbon receptor nuclear translocator-like protein 1 Chain: A
Molecule details ›
Chain: A
Length: 73 amino acids
Theoretical weight: 8.69 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: O00327 (Residues: 66-128; Coverage: 10%)
Gene names: ARNTL, BHLHE5, BMAL1, MOP3, PASD3
Sequence domains: Helix-loop-helix DNA-binding domain
Structure domains: Helix-loop-helix DNA-binding domain
Circadian locomoter output cycles protein kaput Chain: B
Molecule details ›
Chain: B
Length: 71 amino acids
Theoretical weight: 8.54 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: O15516 (Residues: 29-89; Coverage: 7%)
Gene names: BHLHE8, CLOCK, KIAA0334
Sequence domains: Helix-loop-helix DNA-binding domain
Structure domains: Helix-loop-helix DNA-binding domain
E-box DNA sense strand Chain: C
Molecule details ›
Chain: C
Length: 15 nucleotides
Theoretical weight: 4.59 KDa
E-box DNA antisense strand Chain: D
Molecule details ›
Chain: D
Length: 15 nucleotides
Theoretical weight: 4.59 KDa

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: PHOTON FACTORY BEAMLINE BL-17A
Spacegroup: P3121
Unit cell:
a: 98.74Å b: 98.74Å c: 62.88Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.198 0.195 0.244
Expression system: Escherichia coli BL21