Merlie J P, Sobel A, Changeux J P, Gros F
Proc Natl Acad Sci U S A. 1975 Oct;72(10):4028-32. doi: 10.1073/pnas.72.10.4028.
Acetylcholine receptor, a component of the specialized muscle membrane, appears during the differentiation of embryonic myogenic cells in tissue culture. Demonstration of incorporation of the radioactive precursor L-[35S]methionine into purified receptor polypeptides is presented as evidence for its synthesis de novo. The identity of the purified radioactive species is established by cosedimentation of the [35S]receptor with [3H]alpha-toxin binding activity on sucrose gradients and by crossreaction with antiserum to purified acetylcholine receptor of Electrophorus electricus.
乙酰胆碱受体是特化肌膜的一个组成部分,在组织培养中胚胎肌原性细胞分化过程中出现。将放射性前体L-[35S]甲硫氨酸掺入纯化的受体多肽中,以此作为其从头合成的证据。纯化的放射性物质的身份通过[35S]受体与[3H]α-银环蛇毒素结合活性在蔗糖梯度上的共沉降以及与电鳗纯化乙酰胆碱受体抗血清的交叉反应来确定。