Mortelmans K, Friedberg E C, Slor H, Thomas G, Cleaver J E
Proc Natl Acad Sci U S A. 1976 Aug;73(8):2757-61. doi: 10.1073/pnas.73.8.2757.
Crude extracts of normal human diploid fibroblasts and of human peripheral blood lymphocytes excise thymine dimers from purified ultraviolet-irradiated DNA, or from the DNA presumably present as chromatin in unfractionated cell-free preparations of cells that had been labeled with [3H]thymidine. Extracts of xeroderma pigmentosum cells from complementation groups A, C, and D also excise thymine dimers from purified DNA, but extracts of group A cells do not excise dimers from the DNA of radioactively labeled unfractionated cell-free preparations.
正常人二倍体成纤维细胞和人外周血淋巴细胞的粗提物能从纯化的紫外线照射过的DNA中,或从可能以染色质形式存在于用[3H]胸腺嘧啶核苷标记过的未分级无细胞细胞制剂中的DNA中切除胸腺嘧啶二聚体。来自互补组A、C和D的着色性干皮病细胞提取物也能从纯化的DNA中切除胸腺嘧啶二聚体,但A组细胞提取物不能从未分级放射性标记无细胞制剂的DNA中切除二聚体。