6wg4

X-ray diffraction
2.31Å resolution

Crystal structure of human SMC1-SMC3 hinge domain heterodimer in south-open conformation

Released:
Source organism: Homo sapiens
Primary publication:
Cryo-EM structure of the human cohesin-NIPBL-DNA complex.
Science 368 1454-1459 (2020)
PMID: 32409525

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-172084 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Structural maintenance of chromosomes protein 1A Chain: A
Molecule details ›
Chain: A
Length: 179 amino acids
Theoretical weight: 20.16 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q14683 (Residues: 499-675; Coverage: 14%)
Gene names: DXS423E, KIAA0178, SB1.8, SMC1, SMC1A, SMC1L1
Sequence domains: SMC proteins Flexible Hinge Domain
Structural maintenance of chromosomes protein 3 Chain: B
Molecule details ›
Chain: B
Length: 201 amino acids
Theoretical weight: 22.76 KDa
Source organism: Homo sapiens
Expression system: Trichoplusia ni
UniProt:
  • Canonical: Q9UQE7 (Residues: 493-685; Coverage: 16%)
Gene names: BAM, BMH, CSPG6, SMC3, SMC3L1
Sequence domains: SMC proteins Flexible Hinge Domain

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: I222
Unit cell:
a: 78.291Å b: 119.612Å c: 127.119Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.188 0.183 0.235
Expression systems:
  • Escherichia coli BL21(DE3)
  • Trichoplusia ni