PDBi (Protein Data Bank in India)

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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

1dn9

Structure of an alternating-b dna helix and its relationship to a-tract dna