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单词 spermidine
释义

Definition of spermidine in English:

spermidine

noun ˈspəːmɪdiːnˈspərməˌdēn
mass nounBiochemistry
  • A colourless compound with a similar distribution and effect to spermine.

    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.

    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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更新时间:2024/12/24 9:43:44