1BF3:
reference: Lys42 and Ser42 variants of p-hydroxybenzoate hydroxylase from Pseudomonas fluorescens reveal that Arg42 is essential for NADPH binding., Eppink MH, Schreuder HA, van Berkel WJ, Eur J Biochem. 1998 Apr 1;253(1):194-201. PMID: 9578477

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