1NZK: Crystal Structure Of A Multiple Mutant (L44f, L73v, V109l, L C117v) Of Human Acidic Fibroblast Growth Factor
reference: Accommodation of a highly symmetric core within a symmetric protein superfold., Brych SR, Kim J, Logan TM, Blaber M, Protein Sci 2003 Dec;12(12):2704-18. PMID: 14627732

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