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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

2f53

Directed evolution of human t-cell receptor cdr2 residues by phage display dramatically enhances affinity for cognate peptide-mhc without apparent cross-reactivity