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Factor H is a member of the regulators of complement activation family and is a complement control protein. It is a large (155 kilodaltons), soluble glycoprotein that circulates in human plasma (at typical concentrations of 200–300 micrograms per milliliter). Its principal function is to regulate the alternative pathway of the complement system, ensuring that the complement system is directed towards pathogens or other dangerous material and does not damage host tissue. Factor H regulates complement activation on self cells and surfaces by possessing both cofactor activity for the Factor I mediated C3b cleavage, and decay accelerating activity against the alternative pathway C3-convertase, C3bBb. Factor H exerts its protective action on self cells and self surfaces but not on the surfaces

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  • Factor H
  • Фактор H системи комплементу
  • Czynnik H
  • Faktor komplemen H
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  • Czynnik H (ang. Complement Factor H, CFH) – białko, którego fizjologiczną rolą jest regulacja alternatywnej drogi aktywacji dopełniacza i zapewnienie że jego działanie zostanie skierowane przeciw chorobotwórczym drobnoustrojom, a nie tkankom organizmu. Czynnik H jest krążącą we krwi, dużą glikoproteiną (masa cząsteczkowa 155 kDa) która w surowicy występuje w stężeniu 500-800 µg/ml. Wiąże on składową C3b i wspomaga czynnik I w hamowaniu konwertazy C3 drogi alternatywnej.
  • Фактор H системи комплементу (англ. Complement factor H) – білок, який кодується геном CFH, розташованим у людей на короткому плечі 1-ї хромосоми. Довжина поліпептидного ланцюга білка становить 1 231 амінокислот, а молекулярна маса — 139 096. Послідовність амінокислот A: АланінC: ЦистеїнD: Аспарагінова кислотаE: Глутамінова кислотаF: ФенілаланінG: ГліцинH: ГістидинI: ІзолейцинK: ЛізинL: ЛейцинM: МетіонінN: АспарагінP: ПролінQ: ГлутамінR: АргінінS: СеринT: ТреонінV: ВалінW: Триптофан Y: Тирозин
  • Faktor komplemen H (bahasa Inggris: complement factor H, factor H, reconectin, H factor 1, H factor 2 (complement), beta-1-H-globulin, CFHL3, MGC88246, age-related maculopathy susceptibility 1, isoform b, beta-1H, ARMD4, AHUS1, FHL1, ARMS1) adalah glikoprotein dengan massa sekitar 155 kDa dan panjang 1231 asam amino yang terkodikasi pada gen CFH atau HF atau HF1 atau HF2, dan beredar di dalam sirkulasi plasma darah dengan rasio 500-800 mikrogram per mililiter. Faktor H menginduksi sekresi oleh monosit, dan merupakan ligan bagi L- pada leukosit untuk menginduksi sekresi TNF-α.
  • Factor H is a member of the regulators of complement activation family and is a complement control protein. It is a large (155 kilodaltons), soluble glycoprotein that circulates in human plasma (at typical concentrations of 200–300 micrograms per milliliter). Its principal function is to regulate the alternative pathway of the complement system, ensuring that the complement system is directed towards pathogens or other dangerous material and does not damage host tissue. Factor H regulates complement activation on self cells and surfaces by possessing both cofactor activity for the Factor I mediated C3b cleavage, and decay accelerating activity against the alternative pathway C3-convertase, C3bBb. Factor H exerts its protective action on self cells and self surfaces but not on the surfaces
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