hce_kmu
108年
普通生物及生化概論
第 29 題
Histones are found in eukaryotic cell nuclei that package and order the DNA into structural units called nucleosomes. They are usually rich in _______, and they interact with DNA via _______.
- A lysine and arginine; ionic bonds
- B glutamic acid and aspartic acid; hydrogen bonds
- C alanine and glycine; ionic bonds
- D lysine and arginine; hydrogen bonds
- E glutamic acid and aspartic acid; ionic bonds
思路引導 VIP
請思考一下，DNA 的磷酸骨架在生理環境中主要帶有哪種電荷？如果一個蛋白質需要像「膠水」一樣緊緊地包裹並中和這些 DNA 分子，那麼這個蛋白質的表面應該具備什麼樣的化學特性，才能利用電荷的交互作用達到最強的結合效果呢？