Structure of the neutrophil-activating protein from Helicobacter pylori.
نویسندگان
چکیده
Helicobacter pylori is a major human pathogen associated with severe gastroduodenal diseases, including ulcers and cancers. An H.pylori protein that is highly immunogenic in humans and mice has been identified recently. This protein has been termed HP-NAP, due to its ability of activating neutrophils. In order to achieve a molecular understanding of its unique immunogenic and pro-inflammatory properties, we have determined its three-dimensional structure. Its quaternary structure is similar to that of the dodecameric bacterial ferritins (Dps-like family), but it has a different surface potential charge distribution. This is due to the presence of a large number of positively charged residues, which could well account for its unique ability in activating human leukocytes.
منابع مشابه
Serum Antibodies against Helicobacter pylori Neutrophil Activating Protein in Carriers of IL-4 C-590T Genetic Polymorphism Amplify the Risk of Gastritis and Gastric Cancer
Background: Gastric cancer arises, mainly, on an inflammatory background. Helicobacter pylori neutrophil activating (HP-NAP) protein functions as a potent pro-inflammatory mediator. Similarly, IL-4 plays a critical role in the inflammation pathway, the levels of which are altered by C to T transition at position -590 in its promoter region. Here, we have aimed to assess the risk of gastri...
متن کاملCarbohydrate binding specificity of the neutrophil-activating protein of Helicobacter pylori.
The possible interaction of the neutrophil-activating protein of Helicobacter pylori with target cell glycoconjugates was investigated by the binding of 125I-labeled recombinant protein to glycosphingolipids from human neutrophils in solid phase assays. Thereby, a distinct binding of the neutrophil-activating protein to four bands in the acid glycosphingolipid fraction from human neutrophils wa...
متن کاملEffects of T208E activating mutation on MARK2 protein structure and dynamics: Modeling and simulation
Microtubule Affinity-Regulating Kinase 2 (MARK2) protein has a substantial role in regulation of vital cellular processes like induction of polarity, regulation of cell junctions, cytoskeleton structure and cell differentiation. The abnormal function of this protein has been associated with a number of pathological conditions like Alzheimer disease, autism, several carcinomas and development of...
متن کاملPolarization and Improved Migration Maturation of Dendritic Cells with Th1 Neutrophil-Activating Protein Promotes Helicobacter pylori
متن کامل
Polarization and Improved Migration Maturation of Dendritic Cells with Th1 Neutrophil-Activating Protein Promotes Helicobacter pylori Vector-Encoded
متن کامل
آمادهسازی نانوذرات تریمتیل کیتوزان حامل پروتئین فعال کننده نوتروفیلی نوترکیب از هلیکوباکتر پیلوری
Background and purpose: Breast cancer is one of the leading causes of death in women around the world with a very high degree of mortality and morbidity. Conventional treatments use cytotoxic drugs which have high levels of side effects, affecting the patient’s quality of life. Therefore today’s pharmacology is looking into treatments with low side effects and maximum efficiency. The helicobact...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of molecular biology
دوره 323 1 شماره
صفحات -
تاریخ انتشار 2002