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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

1a9n

Crystal structure of the spliceosomal u2b''-u2a' protein complex bound to a fragment of u2 small nuclear rna