Collins A R, Fleming I M, Gedik C M
Boyd Orr Research Centre, Rowett Research Institute, Bucksburn, Aberdeen, UK.
Biochim Biophys Acta. 1994 Nov 22;1219(3):724-7. doi: 10.1016/0167-4781(94)90236-4.
A human cell extract is capable of carrying out damage-specific incision on supercoiled nucleoid DNA. The DNA breaks are detected by single cell gel electrophoresis. Incubation of the incised DNA with extract and DNA precursors results in resealing of the breaks, with retention of the supercoiled state of the DNA.
人细胞提取物能够对超螺旋类核DNA进行损伤特异性切割。通过单细胞凝胶电泳检测DNA断裂情况。将切割后的DNA与提取物及DNA前体一起孵育,结果是断裂处重新封闭,DNA保持超螺旋状态。