单词	spermidine
释义	spermidine /ˈspəːmɪdiːn / noun [mass noun] Biochemistry A colourless compound with a similar distribution and effect to spermine. A polyamine; chemical formula: H2N(CH2)3NH(CH2)4NH2. The present study indicates that DNA resolubilization at high concentrations of spermine and spermidine is explained by formation of small particles of condensed DNA that cannot be precipitated by centrifugation.... These specificities lead to preferential bindings through the DNA minor groove for putrescine and spermidine, whereas spermine binds by the major groove. Maybe even higher efficiencies would have been obtained using spermine instead of spermidine. Origin 1920s: from sperm + -ide + -ine4.
随便看	repercussion repercussive reperforator reperform reperformance reperfume reperfusion repermit repersuade repertoire repertorium repertory repertory company reperusal reperuse repetend repetition repetitional repetitionary repetition choice repetition clock repetition compound repetition compulsion repetition device repetitionist

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