1H8X:
reference: The structure of an engineered domain-swapped ribonuclease dimer and its implications for the evolution of proteins toward oligomerization., Canals A, Pous J, Guasch A, Benito A, Ribo M, Vilanova M, Coll M, Structure (Camb) 2001 Oct;9(10):967-76. PMID: 11591351

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