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FASTA Sequence PDB Format mmCIF Format
FASTA Sequence PDB Format PDB Format(gz) PDBx/mmCIF Format PDBx/mmCIF Format(gz) PDBML/XML Format Validation Full PDF Validation CIF

1fan

Crevice-forming mutants in the rigid core of bovine pancreatic trypsin inhibitor: crystal structures of f22a, y23a, n43g, and f45a