PDBe 1sr6

X-ray diffraction
2.75Å resolution

Structure of nucleotide-free scallop myosin S1

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Myosin heavy chain, striated muscle Chain: A
Molecule details ›
Chain: A
Length: 840 amino acids
Theoretical weight: 95.82 KDa
Source organism: Argopecten irradians
UniProt:
  • Canonical: P24733 (Residues: 1-840; Coverage: 43%)
Sequence domains:
Myosin essential light chain, striated adductor muscle Chain: C
Molecule details ›
Chain: C
Length: 156 amino acids
Theoretical weight: 17.64 KDa
Source organism: Argopecten irradians
UniProt:
  • Canonical: P07291 (Residues: 2-157; Coverage: 99%)
Sequence domains: EF-hand domain pair
Structure domains: EF-hand
Myosin regulatory light chain, striated adductor muscle Chain: B
Molecule details ›
Chain: B
Length: 156 amino acids
Theoretical weight: 17.56 KDa
Source organism: Argopecten irradians
UniProt:
  • Canonical: P13543 (Residues: 2-157; Coverage: 99%)
Sequence domains: EF-hand domain
Structure domains: EF-hand

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID29
Spacegroup: P21
Unit cell:
a: 83.591Å b: 51.109Å c: 162.329Å
α: 90° β: 98.02° γ: 90°
R-values:
R R work R free
0.242 0.242 0.286