| 释义 |
Definition of spermine in English: sperminenoun ˈspəːmiːnˈspərmēn mass nounBiochemistry A deliquescent compound which acts to stabilize various components of living cells and is widely distributed in living and decaying tissues. A polyamine; chemical formula: (H₂N(CH₂)₃NH(CH₂)₂)₂. Compare with spermidine Example sentencesExamples - The binding model displayed in Fig.8 A has been observed from crystallographic studies on B-DNA dodecamers stabilized with spermine.
- The flexible polyamine spermine displays a high presence in the minor groove but does not form long-lived and structurally defined complexes.
- 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.
- By comparison, the tetra-amine spermine only binds weakly to peptide carboxylate groups, and not to the a-helical conformation.
- Because of their positive charges, putrescine, spermidine, and spermine show a high affinity with the acidic constituents of the cell (RNA, DNA, ATP, acidic proteins, phospholipids, etc.).
Origin Late 19th century: so called because first found in sperm. Definition of spermine in US English: sperminenounˈspərmēn Biochemistry A deliquescent compound which acts to stabilize various components of living cells and is widely distributed in living and decaying tissues. A polyamine; chemical formula: (H₂N(CH₂)₃NH(CH₂)₂)₂ Example sentencesExamples - The flexible polyamine spermine displays a high presence in the minor groove but does not form long-lived and structurally defined complexes.
- 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.
- The binding model displayed in Fig.8 A has been observed from crystallographic studies on B-DNA dodecamers stabilized with spermine.
- By comparison, the tetra-amine spermine only binds weakly to peptide carboxylate groups, and not to the a-helical conformation.
- Because of their positive charges, putrescine, spermidine, and spermine show a high affinity with the acidic constituents of the cell (RNA, DNA, ATP, acidic proteins, phospholipids, etc.).
Origin Late 19th century: so called because first found in sperm. |