Lac repressor purification without inactivation of DNA binding activity
A procedure has been developed which eliminates the commonly observed inactivation of the DNA binding activity of the lac repressor during purification. The operator binding activity of the repressor obtained by this method is 100 ±10%. The repressor can be stored frozen indefinitely without losing its affinity for DNA.
Additional Information© 1977 Oxford University Press. Received November 29, 1976. This work is contribution No. 5453 from the Norman W. Church Laboratory of Chemical Biology, California Institute of Technology. This work has been carried out with the support of the National Institutes of Health grants GM-12121 (RED) and HD-04420 (ADR), National Science Foundation grants PCM75-05586 (RED) and BMS75-14784 (ADR), and the Hyatt Corporation Research Fund (ADR).
Published - ROSnar77.pdf