› 1qtx

X-ray diffraction
1.65Å resolution

THE 1.65 ANGSTROM STRUCTURE OF CALMODULIN RS20 PEPTIDE COMPLEX

Released:
DOI: 10.2210/pdb1qtx/pdb
PDB entry 1qtx coloured by chain, front view.
PDB entry 1qtx coloured by chain, side view.
PDB entry 1qtx coloured by chain, top view.
Source organisms:
Entry authors: Weigand S, Anderson WF

Function and Biology Details

Reaction catalysed: 
ATP + [myosin light-chain] = ADP + [myosin light-chain] phosphate
Biochemical function:
Biological process:
  • not assigned
Cellular component:
  • not assigned
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-106131 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
EF-hand domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 148 amino acids
Theoretical weight: 16.64 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
UniProt:
  • Canonical: A0MMD0 (Residues: 2-149; Coverage: 99%)
Sequence domains: EF-hand domain pair
Structure domains: EF-hand
Myosin light chain kinase, smooth muscle, deglutamylated form Chain: B
Molecule details ›
Chain: B
Length: 21 amino acids
Theoretical weight: 2.3 KDa
Source organism: Gallus gallus
Expression system: Not provided
UniProt:
  • Canonical: P11799 (Residues: 1731-1749; Coverage: 1%)
Gene name: Mylk

Ligands and Environments

1 bound ligand:
Ligand CA 4 x CA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU RU200
Spacegroup: P212121
Unit cell:
a: 70.046Å b: 55.344Å c: 41.528Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.185 0.185 0.214
Expression systems:
  • Escherichia coli
  • Not provided

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