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SCALLOP MYOSIN S1-AMPPNP IN THE ACTIN-DETACHED CONFORMATION

X-ray diffraction
3Å resolution
PDB entry 1kqm coloured by chain, front view.
PDB entry 1kqm coloured by chain, side view.
PDB entry 1kqm coloured by chain, top view.
Source organism: Argopecten irradians
Assembly composition:
hetero trimer (preferred)
Entry contents: 3 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Myosin
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Multimeric state: hetero trimer
Accessible surface area: 54492.89 Å2
Buried surface area: 8897.82 Å2
Dissociation area: 1,797 Å2
Dissociation energy (ΔGdiss): 23.54 kcal/mol
Dissociation entropy (TΔSdiss): 13.19 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-139482

Macromolecules

Myosin heavy chain, striated muscle
Chain: A
Length: 835 amino acids
Theoretical weight: 95.32 KDa
Source organism: Argopecten irradians
UniProt:
  • Canonical: P24733 (Residues: 1-835; Coverage: 43%)
Pfam:
InterPro:
SCOP:
Myosin heavy chain, striated muscle in PDB entry 1kqm, assembly 1, front view.
Myosin heavy chain, striated muscle in PDB entry 1kqm, assembly 1, side view.
Myosin heavy chain, striated muscle in PDB entry 1kqm, assembly 1, top view.
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Myosin regulatory light chain, striated adductor muscle
Chain: B
Length: 156 amino acids
Theoretical weight: 17.56 KDa
Source organism: Argopecten irradians
UniProt:
  • Canonical: P13543 (Residues: 2-157; Coverage: 99%)
Pfam: EF-hand domain pair
InterPro:
CATH: EF-hand
SCOP: Calmodulin-like
Myosin regulatory light chain, striated adductor muscle in PDB entry 1kqm, assembly 1, front view.
Myosin regulatory light chain, striated adductor muscle in PDB entry 1kqm, assembly 1, side view.
Myosin regulatory light chain, striated adductor muscle in PDB entry 1kqm, assembly 1, top view.
Molecule details ›

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Myosin essential light chain, striated adductor muscle
Chain: C
Length: 156 amino acids
Theoretical weight: 17.64 KDa
Source organism: Argopecten irradians
UniProt:
  • Canonical: P07291 (Residues: 2-157; Coverage: 99%)
Pfam: EF-hand domain pair
InterPro:
CATH: EF-hand
SCOP: Calmodulin-like
Myosin essential light chain, striated adductor muscle in PDB entry 1kqm, assembly 1, front view.
Myosin essential light chain, striated adductor muscle in PDB entry 1kqm, assembly 1, side view.
Myosin essential light chain, striated adductor muscle in PDB entry 1kqm, assembly 1, top view.
Molecule details ›

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