Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Repressor of temperate mycobacteriophage L1 harbors a stable C-terminal domain and binds to different asymmetric operator DNAs with variable affinity | Virology Journal BioMed Central Research Repressor of temperate mycobacteriophage L1 harbors a stable C-terminal domain and binds to different asymmetric operator DNAs with variable affinity Tridib Ganguly Amitava Bandhu Partho Chattoraj Palas K Chanda Malabika Das Nitai C Mandal and Subrata Sau Open Access Address Department of Biochemistry Bose Institute P1 12 CIT Scheme VII M Kolkata - 700 054 West Bengal India Email Tridib Ganguly - tridib_g@ Amitava Bandhu - suvofriendster@ Partho Chattoraj- partho_chattoraj@ Palas K Chanda - palas2004@ Malabika Das - malavika_das@ Nitai C Mandal - mandalnc2003@ SubrataSau - sau@ Corresponding author Published 28 June 2007 Received 26 January 2007 Accepted 28 June 2007 Virology Journal 2007 4 64 doi l 743-422X-4-64 This article is available from http content 4 1 64 2007 Ganguly et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Lysogenic mode of life cycle of a temperate bacteriophage is generally maintained by a protein called repressor . Repressor proteins of temperate lambdoid phages bind to a few symmetric operator DNAs in order to regulate their gene expression. In contrast repressor molecules of temperate mycobacteriophages and some other phages bind to multiple asymmetric operator DNAs. Very little is known at present about the structure-function relationship of any mycobacteriophage repressor. Results Using highly purified repressor CI of temperate mycobacteriophage L1 we have demonstrated here that Ll CI harbors an N-terminal domain NTD and a C-terminal domain CTD which are separated by a small hinge region. Interestingly CTD is more .
