ID 3.1.1.104 DE 5-phospho-D-xylono-1,4-lactonase. CA (1) D-xylono-1,4-lactone 5-phosphate + H2O = 5-phospho-D-xylonate + H(+). CA (2) H2O + L-arabino-1,4-lactone 5-phosphate = 5-phospho-L-arabinonate + CA H(+). CC -!- The enzyme, characterized from Mycoplasma spp., contains a binuclear CC metal center with two zinc cations. CC -!- The enzyme is specific for the phosphorylated forms, and is unable to CC hydrolyze non-phosphorylated 1,4-lactones. DR A5IZ80, PFLAC_MYCAP; Q4A724, PFLAC_MYCS5; //