Winshell E B, Neu H C
J Bacteriol. 1970 May;102(2):537-9. doi: 10.1128/jb.102.2.537-539.1970.
Escherichia coli subjected to cold osmotic shock released 30 to 40% of their fatty acid esters and 42% of their cellular hexosamine. In contrast, Enterobacter, although they released 40% of fatty acid esters, release only 25% of hexosamine. Proteus released less than 15% of either fatty acid esters or hexosamine. These differences are taken to explain the differences among the Enterobacteriaceae in releasing surface enzymes after osmotic shock. It is felt that the release of additional lipopolysaccharide after osmotic shock is necessary for the release of surface enzymes that are not freed by ethylenediaminetetraacetic acid-tris(hydroxymethyl)aminomethane exposure.
遭受冷渗透休克的大肠杆菌释放出其30%至40%的脂肪酸酯和42%的细胞己糖胺。相比之下，肠杆菌虽然释放出40%的脂肪酸酯，但仅释放出25%的己糖胺。变形杆菌释放的脂肪酸酯或己糖胺均不到15%。这些差异被用来解释肠杆菌科在渗透休克后释放表面酶的差异。有人认为，渗透休克后额外脂多糖的释放对于释放那些不会因暴露于乙二胺四乙酸-三（羟甲基）氨基甲烷而释放的表面酶是必要的。
