ID   1.3.1.5
DE   cucurbitacin Delta(23)-reductase.
CA   (1) 23,24-dihydrocucurbitacin B + NADP(+) = cucurbitacin B + H(+) +
CA   NADPH.
CA   (2) 23,24-dihydrocucurbitacin B + NAD(+) = cucurbitacin B + H(+) + NADH.
CC   -!- Iron or zinc can replace manganese to some extent.
CC   -!- Cucurbitacin is a plant triterpenoid.
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