Citation: Fjt. Vanderbolt et al., SELECTIVE CYSTEINE-]SERINE REPLACEMENTS IN P-HYDROXYBENZOATE HYDROXYLASE FROM PSEUDOMONAS-FLUORESCENS ALLOW THE UNAMBIGUOUS ASSIGNMENT OF CYS211 AS THE SITE OF MODIFICATION BY SPIN-LABELED P-CHLOROMERCURIBENZOATE, Protein engineering, 7(6), 1994, pp. 801-804