Pyridoxal phosphate breakdown by an alkaline-phosphatase preparation

Abstract

has demonstrated the presence of phosphatase activities for pyridoxal and pyrid- oxamine phosphates in rabbit-liver fractions. Wada et al. (1959) have also demonstrated the breakdown of pyridoxal and pyridoxamine phos- phates in rabbit-liver preparations. Roberts, Evidence for pyridoxal phosphate destruction in Neurospora crassa ex- tracts has been obtained by The latter author has suggested that an acid phosphatase is involved. Turner & Happold (1961) have demonstrated pyridoxal phosphate- phosphatase activity in Escherichia coli extracts. By the use of direct spectrophotometric methods for the assay of activity, they suggest that an alkaline phosphatase is involved.