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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

2hal

An episulfide cation (thiiranium ring) trapped in the active site of hav 3c proteinase inactivated by peptide-based ketone inhibitors