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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

1d56

Alternative structures for alternating poly(da-dt) tracts: the structure of the b-dna decamer c-g-a-t-a-t-a-t-c-g