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Structure of the Tropomyosin Overlap Complex from Chicken Smooth Muscle

X-ray diffraction
2.2Å resolution
PDB entry 3mud coloured by chain, front view.
PDB entry 3mud coloured by chain, side view.
PDB entry 3mud coloured by chain, top view.
Source organisms:
Assembly composition:
hetero tetramer (preferred)
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: protein Tropomyosin alpha-1
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Multimeric state: hetero tetramer
Accessible surface area: 24441.01 Å2
Buried surface area: 7627.07 Å2
Dissociation area: 1,448.03 Å2
Dissociation energy (ΔGdiss): 22.45 kcal/mol
Dissociation entropy (TΔSdiss): 10.73 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-137547

Macromolecules

DNA repair protein XRCC4; Tropomyosin alpha-1 chain
Chains: A, B
Length: 175 amino acids
Theoretical weight: 19.74 KDa
Source organisms: Expression system: Escherichia coli
UniProt:
  • Canonical: Q13426 (Residues: 2-135, 137-137; Coverage: 40%)
  • Canonical: P04268 (Residues: 248-248, 250-284; Coverage: 13%)
    • nullnull
Gene names: TPM1, XRCC4
Pfam: XRCC4 N-terminal domain
InterPro:
CATH:
DNA repair protein XRCC4 in PDB entry 3mud, assembly 1, front view.
DNA repair protein XRCC4 in PDB entry 3mud, assembly 1, side view.
DNA repair protein XRCC4 in PDB entry 3mud, assembly 1, top view.
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Microtubule-associated protein RP/EB family member 1; Tropomyosin alpha-1 chain
Chains: C, D
Length: 75 amino acids
Theoretical weight: 8.57 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P09493 (Residues: 1-29; Coverage: 10%)
  • Canonical: Q15691 (Residues: 215-257; Coverage: 16%)
    • nullnull
Gene names: C15orf13, MAPRE1, TMSA, TPM1
Pfam:
InterPro:
CATH: Vasodilator-stimulated phosphoprotein
Microtubule-associated protein RP/EB family member 1 in PDB entry 3mud, assembly 1, front view.
Microtubule-associated protein RP/EB family member 1 in PDB entry 3mud, assembly 1, side view.
Microtubule-associated protein RP/EB family member 1 in PDB entry 3mud, assembly 1, top view.
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