The chb operon constitutes the genes essential for utilization of chitooligosaccharides in Escherichia coli and related species. The six genes of the operon code for a transcriptional regulator (ChbR) of the operon, a ...

Gliomas are the most common primary brain tumors and include astrocytomas, oligodendrogliomas and oligoastrocytomas. Astrocytomas have a high frequency of occurrence as compared to the other gliomas and several studies ...

The success of Mycobacterium tuberculosis as a pathogen is due to its remarkable ability to: (i). adapt to and survive inside activated macrophages under nonproliferating condition, (ii). put up drug resistance ...