4P5S:
reference: The sole tryptophan of amicyanin enhances its thermal stability but does not influence the electronic properties of the type 1 copper site., Dow BA, Sukumar N, Matos JO, Choi M, Schulte A, Tatulian SA, Davidson VL, Arch Biochem Biophys. 2014 Apr 1. pii: S0003-9861(14)00111-8. doi:, 10.1016/j.abb.2014.03.010. PMID: 24704124

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