the following results led to the conclusion that thiamin-repressible acid phosphatase physiologically catalyzes the hydrolysis of thiamin phosphates in the periplasmic space of s. cerevisiae , thus participating in utilization of the thiamin moiety of the phosphates by yeast cells : ( a ) thiamin-repressible acid phosphatase showed km values of 1.6 and 1.7 microm at ph 5.0 for thiamin monophosphate and thiamin pyrophosphate , respectively .
C0039840
thiamin
C0039845
thiamin monophosphate