1HZ6:
reference: Structures of the B1 domain of protein L from Peptostreptococcus magnus with a tyrosine to tryptophan substitution., O'Neill JW, Kim DE, Baker D, Zhang KY, Acta Crystallogr D Biol Crystallogr 2001 Apr;57(Pt 4):480-7. PMID: 11264576

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