نتایج جستجو برای: IPGC
تعداد نتایج: 20 فیلتر نتایج به سال:
The expression of a subset of Shigella flexneri virulence genes is dependent upon a cytoplasmic chaperone, IpgC, and an activator from the AraC/XylS family, MxiE. In this paper, we report that the chaperone forms a specific and stable heteromer with MxiE.
The Shigella flexneri Type III secretion system (T3SS) senses contact with human intestinal cells and injects effector proteins that promote pathogen entry as the first step in causing life threatening bacillary dysentery (shigellosis). The Shigella Type III secretion apparatus (T3SA) consists of an anchoring basal body, an exposed needle, and a temporally assembled tip complex. Exposure to env...
زمینه و هدف: شیگلا، یک باسیل گرم منفی متعلق به خانواده آنتروباکتریاسه است و موجب شیگلوزیس می‌شود که نوعی عفونت حاد روده‌ای است. برآورد می‌شود فقط در آسیا، سالانه ۱۲۵ میلیون عفونت و ۱۴۰۰۰ مرگ‌ومیر ناشی از شیگلوز وجود دارد. شیگلا سونئی عامل اصلی اپیدمی در کشورهای درحال‌توسعه است. IpaB فاکتور بیماری‌زای ضروری و چند‌منظوره‌ای در روند عفونت به شمار می‌رود. دستیابی به بیان پروتئین IpaB و انتقال پلاسم...
This paper presents a simple analytical method to optimize the efficiency of two types of electrostatic Vibration Energy Harvesters (VEH): the out-of-plane (OPGC) and in-plane (IPGC) gap-closing converters. The electrical and mechanical behaviours of the transducer are addressed simultaneously, while a voltage limitation on the transducer’s terminals is set to prevent any damage in the conditio...
The cell intrinsic programming that regulates mammalian primordial germ cell (PGC) development in the pre-gonadal stage is challenging to investigate. To overcome this we created a transgene-free method for generating PGCs in vitro (iPGCs) from mouse embryonic stem cells (ESCs). Using labeling for SSEA1 and cKit, two cell surface molecules used previously to isolate presumptive iPGCs, we show t...
Primordial germ cells (PGCs) undergo dramatic rearrangements to their methylome during embryogenesis, including initial genome-wide DNA demethylation that establishes the germline epigenetic ground state. The role of the 5-methylcytosine (5mC) dioxygenases Tet1 and Tet2 in the initial genome-wide DNA demethylation process has not been examined directly. Using PGCs differentiated from either con...
The primary effector for Shigella invasion of epithelial cells is IpaC, which is secreted via a type III secretion system. We recently reported that the IpaC N terminus is required for type III secretion and possibly other functions. In this study, mutagenesis was used to identify an N-terminal secretion signal and to determine the functional importance of the rest of the IpaC N terminus. The 1...
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