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Structural Characterization of Minor Ampullate Spidroin Domains and their Distinct Roles in Fibroin Solubility and Fiber Formation

Solution NMR
PDB entry 2m0m coloured by chain, ensemble of 10 models, front view.
PDB entry 2m0m coloured by chain, ensemble of 10 models, side view.
PDB entry 2m0m coloured by chain, ensemble of 10 models, top view.
Source organism: Trichonephila antipodiana
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Minor ampullate fibroin 1
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Multimeric state: homo dimer
Accessible surface area: 8887.23 Å2
Buried surface area: 4004.77 Å2
Dissociation area: 2,002.39 Å2
Dissociation energy (ΔGdiss): 33.15 kcal/mol
Dissociation entropy (TΔSdiss): 11.75 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-173703

Macromolecules

Minor ampullate fibroin 1
Chains: A, B
Length: 107 amino acids
Theoretical weight: 10.51 KDa
Source organism: Trichonephila antipodiana
Expression system: Escherichia coli
UniProt:
  • Canonical: Q2LC34 (Residues: 250-356; Coverage: 30%)
Pfam: Major ampullate spidroin 1 and 2
InterPro:
CATH: Spidroin domain, C-terminal domain
Minor ampullate fibroin 1 in PDB entry 2m0m, assembly 1, front view.
Minor ampullate fibroin 1 in PDB entry 2m0m, assembly 1, side view.
Minor ampullate fibroin 1 in PDB entry 2m0m, assembly 1, top view.
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