Cucurbitacin delta 23-reductase from Cucurbita maxima var. Green Hubbard fruit displays an apparent Mr of 32,000, a Stokes radius of 263 nm and a diffusion coefficient of 8.93 X 10(-7) cm2 X s-1. The enzyme appears to possess a homogeneous dimeric quaternary structure with a subunit Mr of 15,000.
Aulacophora fermoralis chinensis and Aulacophora cattigarensis are the two related Aulacophora beetles, but their host selectivity and feeding behavior are significantly different. A. fernzoralis chinensis usually feeds upon Cucumis sativus and Cucurbita moschata, but never upon Luffa acutangula,
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