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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

1u71

Understanding the role of leu22 variants in methotrexate resistance: comparison of wild-type and leu22arg variant mouse and human dihydrofolate reductase ternary crystal complexes with methotrexate and nadph