Gene encoding vitamin b6 phosphate phosphatase and use thereof

A recombinant microorganism of the genus Sinorhizobium or Escherichia, capable of producing vitamin B6 from vitamin B6 phosphate, wherein said microorganism is transformed with a DNA encoding vitamin B6 phosphate phosphatase selected from the group consisting of:

• (a) the DNA sequence of SEQ ID NO:9;
• (b) a DNA sequence encoding a polypeptide having vitamin B6 phosphate phosphatase activity, which hybridizes under stringent hybridization and stringent washing conditions to the complementary DNA sequence defined in (a), wherein the stringent hybridization and stringent washing conditions comprise hybridizing in 5×SSC, 0.3% SDS, 2% blocking reagent, 0.1% N-lauroylsarcosine, 50% formamide overnight at 42° C. and washing twice in 2×SSC, 0.1% SDS at room temperature for 5 minutes and then washing twice in 0.1×SSC, 0.1% SDS at “68° C. for 15 minutes;
• (c) a DNA sequence encoding a polypeptide having vitamin B6 phosphate phosphatase activity, wherein said polypeptide is at least 90% identical to the amino acid sequence of SEQ ID NO:10;
• and
• (d) a DNA sequence encoding a polypeptide having vitamin B6 phosphate phosphatase activity and is at least 90% identical to the DNA sequence of SEQ ID NO:9.