Two-component regulatory signal transduction systems are widely distributed among bacteria and enable the organisms to make coordinated changes in gene expression in response to a variety of environmental stimuli. The genome sequence of Mycobacterium tuberculosis contains 11 complete two-component systems, four isolated homologous regulators, and three isolated homologous sensors. We have const...

Kaliteli ve güvenli g?da tüketimi tüketiciler için hayati bir öneme sahiptir. Bu nedenle, ürünlerinin sat?n al?nd??? yer oldukça önemlidir. Özellikle dayan?kl?l??? dü?ük olan süt ürünlerini al?rken bu durum daha da fazla önem arz etmektedir. kapsamda güvenilirli?i konusunda kooperatifler öncü kurulu?lard?r. Tüketicilerin alma davran??lar?n?n aç?klanmas?nda ‘ya?am tarz?’ önemli de?i?kendir. çal?...

A soluble up complex of nitrate reductase can be obtained from a strain of Escheri(:h:hia r:oli that lacks the narl gene and expresses only the n and p subunits. The subunit contains four Fe-S centres and the a subunit contains the molybdenum cofactor, which is the site at which nitrate is reduced. Dcspite the lack of the y subunit of the complete enzyme, this complex can still catalyse the red...

Human pulmonary tuberculosis (TB) is a worldwide public health problem. In resistant individuals, control of the infection mainly requires development of a Th1 cell immune response with production of cytokines, of which interferon-gamma (IFN-gamma)plays an important role. Several antigens from Mycobacterium tuberculosis complex has been described for use in vaccine development or for diagnostic...

The adhE gene of Escherichia coli, located at min 27 on the chromosome, encodes the bifunctional NAD-linked oxidoreductase responsible for the conversion of acetyl-coenzyme A to ethanol during fermentative growth. The expression of adhE is dependent on both transcriptional and posttranscriptional controls and is about 10-fold higher during anaerobic than during aerobic growth. Two putative tran...

CheY-like phosphoacceptor (or receiver [REC]) domain is a common module in a variety of response regulators of the bacterial signal transduction systems. In this work, 4,610 response regulators, encoded in complete genomes of 200 bacterial and archaeal species, were identified and classified by their domain architectures. Previously uncharacterized output domains were analyzed and, in some case...

Escherichia coli elaborates a flexible respiratory metabolism, involving differential synthesis of isoenzymes for many oxidation and reduction reactions. Periplasmic nitrate reductase, encoded by the napFDAGHBC operon, functions with concentrations of nitrate that are too low to support respiration by membrane-bound nitrate reductase. The napF operon control region exhibits unusual organization...

An efficient algorithm based on Empirical Mode Decomposition (EMD) de-noising using soft 10 threshold techniques for accurate doppler profile detection and Signal to Noise Ratio (SNR) improvement of 11 MST Radar Signals is discussed in this paper. Hilbert Huang Transform (HHT) is a time-frequency analysis 12 technique for processing radar echoes which constitutes EMD process that decomposes the...