Kozak M S, Hahn H H, Lennarz W J, Wood W B
J Exp Med. 1968 Feb 1;127(2):341-57. doi: 10.1084/jem.127.2.341.
Small quantities of highly purified granulocytic pyrogen have been separated from contaminating proteins by disc electrophoresis in polyacrylamide gel. The biologically active material thus isolated was shown to be electrophoretically homogeneous at pH 9 and pH 3.8. Earlier work on the chemical properties of the pyrogen molecule has been extended to include: (a) estimation of its molecular weight by gel filtration; (b) demonstration of free sulfhydryl groups essential for its biological activity; and (c) evidence that it is not inactivated by exhaustive extraction with ethanolether or n-heptane.
通过聚丙烯酰胺凝胶圆盘电泳,已从污染蛋白中分离出少量高度纯化的粒细胞热原。由此分离出的生物活性物质在pH 9和pH 3.8时显示出电泳均一性。关于热原分子化学性质的早期研究已扩展至包括:(a) 通过凝胶过滤估计其分子量;(b) 证明其生物活性所必需的游离巯基;以及(c) 有证据表明,用乙醇-乙醚或正庚烷彻底萃取不会使其失活。