ZUBAY G, WATSON M R
J Biophys Biochem Cytol. 1959 Jan 25;5(1):51-4. doi: 10.1083/jcb.5.1.51.
The deoxyribonucleic acid (DNA) from Escherichia coli has been isolated as an extract containing about 50 per cent by weight protein. The protein component differs both in composition and chemical behaviour from histone which occurs in combination with the DNA in most cells of higher organisms. Although this result suggests the absence of histone-like protein, it is not clear whether the bacterial protein found is naturally bound to the bacterial DNA in the cell or becomes attached to the DNA during the course of isolation.
大肠杆菌的脱氧核糖核酸(DNA)已被分离成一种提取物,该提取物含有约50%(重量)的蛋白质。这种蛋白质成分在组成和化学行为上与组蛋白不同,组蛋白在大多数高等生物细胞中与DNA结合存在。尽管这一结果表明不存在类组蛋白,但尚不清楚所发现的细菌蛋白质是在细胞中天然与细菌DNA结合,还是在分离过程中附着到DNA上。