3oxq

X-ray diffraction
2.55Å resolution

Crystal Structure of Ca2+/CaM-CaV1.2 pre-IQ/IQ domain complex

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-143973 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Calmodulin-1 Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 149 amino acids
Theoretical weight: 16.85 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0DP23 (Residues: 1-149; Coverage: 100%)
Gene names: CALM, CALM1, CAM, CAM1
Sequence domains: EF-hand domain pair
Voltage-dependent L-type calcium channel subunit alpha-1C Chains: E, F
Molecule details ›
Chains: E, F
Length: 78 amino acids
Theoretical weight: 9.13 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q13936 (Residues: 1609-1685; Coverage: 4%)
Gene names: CACH2, CACN2, CACNA1C, CACNL1A1, CCHL1A1
Sequence domains: Voltage gated calcium channel IQ domain
Structure domains: Single alpha-helices involved in coiled-coils or other helix-helix interfaces

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.3.1
Spacegroup: P212121
Unit cell:
a: 39.716Å b: 132.05Å c: 158.222Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.243 0.241 0.288
Expression system: Escherichia coli BL21(DE3)