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The structure of rabbit skeletal muscle actomyosin rigor complex at 5.2 angstrom.

Electron Microscopy
5.2Å resolution
PDB entry 5h53 coloured by chain, front view.
PDB entry 5h53 coloured by chain, side view.
PDB entry 5h53 coloured by chain, top view.
Source organism: Oryctolagus cuniculus
Assembly composition:
hetero pentamer (preferred)
Entry contents: 4 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero pentamer
Accessible surface area: 96331.49 Å2
Buried surface area: 11903.66 Å2
Dissociation area: 2,039.76 Å2
Dissociation energy (ΔGdiss): -2.49 kcal/mol
Dissociation entropy (TΔSdiss): 29.54 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-135948

Macromolecules

Skeletal muscle myosin heavy chain MyHC-EO/IIL
Chain: A
Length: 845 amino acids
Theoretical weight: 96.77 KDa
Source organism: Oryctolagus cuniculus
UniProt:
  • Canonical: Q9GJP9 (Residues: 1-845; Coverage: 44%)
Gene name: MYH13
Pfam:
InterPro:
Skeletal muscle myosin heavy chain MyHC-EO/IIL in PDB entry 5h53, assembly 1, front view.
Skeletal muscle myosin heavy chain MyHC-EO/IIL in PDB entry 5h53, assembly 1, side view.
Skeletal muscle myosin heavy chain MyHC-EO/IIL in PDB entry 5h53, assembly 1, top view.
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Myosin regulatory light chain 2, skeletal muscle isoform type 1
Chain: B
Length: 146 amino acids
Theoretical weight: 16.51 KDa
Source organism: Oryctolagus cuniculus
UniProt:
  • Canonical: P24732 (Residues: 25-170; Coverage: 86%)
Pfam: EF-hand domain
InterPro:
Myosin regulatory light chain 2, skeletal muscle isoform type 1 in PDB entry 5h53, assembly 1, front view.
Myosin regulatory light chain 2, skeletal muscle isoform type 1 in PDB entry 5h53, assembly 1, side view.
Myosin regulatory light chain 2, skeletal muscle isoform type 1 in PDB entry 5h53, assembly 1, top view.
Molecule details ›

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Myosin light chain 1/3, skeletal muscle isoform
Chain: C
Length: 153 amino acids
Theoretical weight: 17.19 KDa
Source organism: Oryctolagus cuniculus
UniProt:
  • Canonical: P02602 (Residues: 41-192; Coverage: 79%)
Gene name: MYL1
InterPro:
Myosin light chain 1/3, skeletal muscle isoform in PDB entry 5h53, assembly 1, front view.
Myosin light chain 1/3, skeletal muscle isoform in PDB entry 5h53, assembly 1, side view.
Myosin light chain 1/3, skeletal muscle isoform in PDB entry 5h53, assembly 1, top view.
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Actin, alpha skeletal muscle
Chains: D, E
Length: 375 amino acids
Theoretical weight: 41.88 KDa
Source organism: Oryctolagus cuniculus
UniProt:
  • Canonical: P68135 (Residues: 3-377; Coverage: 100%)
Gene names: ACTA, ACTA1
Pfam: Actin
InterPro:
Actin, alpha skeletal muscle in PDB entry 5h53, assembly 1, front view.
Actin, alpha skeletal muscle in PDB entry 5h53, assembly 1, side view.
Actin, alpha skeletal muscle in PDB entry 5h53, assembly 1, top view.
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