Streptococcus pyogenes expresses the LPXTG motif-containing cell envelope serine protease SpyCep (also called ScpC, PrtS) that degrades and inactivates the major chemoattractant interleukin 8 (IL-8), thereby impairing host neutrophil recruitment. In this study, we identified a novel function of SpyCep: the ability to mediate uptake into primary human endothelial cells. SpyCep triggered its upta...

In the cyanobacterium Synechocystis sp. PCC 6803 there are five genes encoding small CAB-like (SCP) proteins, which have been shown to be up-regulated under stress. Analyses of the promoter sequences of the scp genes revealed the existence of an NtcA binding motif in two scp genes, scpB and scpE. Binding of NtcA, the key transcriptional regulator during nitrogen stress, to the promoter regions ...

The envelope of Autocorrelation Function (ACF) of BOC signal has a narrower main lobe that enables higher resolution of acquisition and tracking. However, the existence of multiple secondary peaks and multiple zero crossings can cause signal detection missing and false lock. In order to get rid of this ambiguity, several methods are proposed, such as oversampling, sub-carrier phase cancellation...

Introduction: Hedera helix is a species of the Araliaceae family, which contains flavonoids, coumarins, phenolic acids, sterols, alkaloids, anthocyanins, and triterpene saponins. α-Hederin saponin compound H. that possesses many potential biological activities. In previous studies, several methods were used to isolate purify α-hederin from ivy leaves. However, loss obtained during solid chromat...

This report presents results of computer simulations and laboratory tests conducted at the CRC to investigate various channel coding techniques proposed for the terrestrial broadcasting of digital advanced television (ATV). The system performance of these techniques is evaluated for various impairments, such as Gaussian noise and co-channel NTSC and ATV interference. The performance of NTSC wit...

The CO2 emission is more than 36 billion tons per year in global scale. As carbon dioxide raises temperature by trapping solar energy the atmosphere, research ongoing to facilitate capture of with high efficiency. While footprint Bangladesh relatively low, upcoming coal-based power plants (>17000 MW) next decade, fossil will increase significantly. To understand underlying benefit process, c...

Group A streptococci (Streptococcus pyogenes or GAS) freshly isolated from individuals with streptococcal sore throat or invasive ("flesh-eating") infection often grow as mucoid colonies on primary culture but lose this colony appearance after laboratory passage. The mucoid phenotype is due to abundant production of the hyaluronic acid capsular polysaccharide, a key virulence determinant associ...