ID 2.7.7.91 DE valienol-1-phosphate guanylyltransferase. CA GTP + H(+) + valienol 1-phosphate = diphosphate + GDP-valienol. CC -!- The enzyme, characterized from the bacterium Streptomyces CC hygroscopicus subsp. limoneus, is involved in the biosynthesis of the CC antifungal agent validamycin A. DR H2K888, VALB_STRHJ ; Q15JG4, VLDB_STRHL ; //