Definition of spermidine in English:

spermidine

noun ˈspəːmɪdiːnˈspərməˌdēn

mass nounBiochemistry

A colourless compound with a similar distribution and effect to spermine.
〔生化〕亚精胺
A polyamine; chemical formula: H₂N(CH₂)₃NH(CH₂)₄NH₂
Example sentencesExamples
- Maybe even higher efficiencies would have been obtained using spermine instead of spermidine.
- 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.
- The effect was dose-dependent in the case of spermidine, but not putrescine and spermine.
- This may be related to the role of arginine as a biochemical precursor in the synthesis of putrescine, spermidine, and spermine, which are believed to be essential to sperm motility.
- These specificities lead to preferential bindings through the DNA minor groove for putrescine and spermidine, whereas spermine binds by the major groove.

Origin

1920s: from sperm + -ide + -ine⁴.

Definition of spermidine in US English:

spermidine

nounˈspərməˌdēn

Biochemistry

A colorless compound with a similar distribution and effect to spermine.
〔生化〕亚精胺
A polyamine; chemical formula: H₂N(CH₂)₃NH(CH₂)₄NH₂
Example sentencesExamples
- These specificities lead to preferential bindings through the DNA minor groove for putrescine and spermidine, whereas spermine binds by the major groove.
- The effect was dose-dependent in the case of spermidine, but not putrescine and spermine.
- 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.
- This may be related to the role of arginine as a biochemical precursor in the synthesis of putrescine, spermidine, and spermine, which are believed to be essential to sperm motility.
- Maybe even higher efficiencies would have been obtained using spermine instead of spermidine.

Origin

1920s: from sperm + -ide + -ine.

词汇	spermidine
释义	Definition of spermidine in English: spermidine noun ˈspəːmɪdiːnˈspərməˌdēn mass nounBiochemistry A colourless compound with a similar distribution and effect to spermine. 〔生化〕亚精胺 A polyamine; chemical formula: H₂N(CH₂)₃NH(CH₂)₄NH₂ Example sentencesExamples Maybe even higher efficiencies would have been obtained using spermine instead of spermidine. 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. The effect was dose-dependent in the case of spermidine, but not putrescine and spermine. This may be related to the role of arginine as a biochemical precursor in the synthesis of putrescine, spermidine, and spermine, which are believed to be essential to sperm motility. These specificities lead to preferential bindings through the DNA minor groove for putrescine and spermidine, whereas spermine binds by the major groove. Origin 1920s: from sperm + -ide + -ine⁴. Definition of spermidine in US English: spermidine nounˈspərməˌdēn Biochemistry A colorless compound with a similar distribution and effect to spermine. 〔生化〕亚精胺 A polyamine; chemical formula: H₂N(CH₂)₃NH(CH₂)₄NH₂ Example sentencesExamples These specificities lead to preferential bindings through the DNA minor groove for putrescine and spermidine, whereas spermine binds by the major groove. The effect was dose-dependent in the case of spermidine, but not putrescine and spermine. 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. This may be related to the role of arginine as a biochemical precursor in the synthesis of putrescine, spermidine, and spermine, which are believed to be essential to sperm motility. Maybe even higher efficiencies would have been obtained using spermine instead of spermidine. Origin 1920s: from sperm + -ide + -ine.
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