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Proprotein convertases (PPCs) are a family of proteins that activate other proteins. Many proteins are inactive when they are first synthesized, because they contain chains of amino acids that block their activity. Proprotein convertases remove those chains and activate the protein. The prototypical proprotein convertase is furin. Proprotein convertases have medical significance, because they are involved in many important biological processes, such as cholesterol synthesis. Compounds called proprotein convertase inhibitors can block their action, and block the target proteins from becoming active. Many proprotein convertases, especially furin and PACE4, are involved in pathological processes such as viral infection, inflammation, hypercholesterolemia, and cancer, and have been postulated

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  • Proprotein convertases (PPCs) are a family of proteins that activate other proteins. Many proteins are inactive when they are first synthesized, because they contain chains of amino acids that block their activity. Proprotein convertases remove those chains and activate the protein. The prototypical proprotein convertase is furin. Proprotein convertases have medical significance, because they are involved in many important biological processes, such as cholesterol synthesis. Compounds called proprotein convertase inhibitors can block their action, and block the target proteins from becoming active. Many proprotein convertases, especially furin and PACE4, are involved in pathological processes such as viral infection, inflammation, hypercholesterolemia, and cancer, and have been postulated as therapeutic targets for some of these diseases. (en)
  • As pró-convertases são um dos sete membros da família das , que ativam proteínas por clivagem. A expressão de pró-convertases varia muito, e todas as células expressam mais de um tipo delas. As pró-convertases agem em vários substratos como: , hormônios peptídeos, fatores de crescimento e diferenciação, receptores, enzimas, moléculas de adesão, fatores de coagulação sanguínea, proteínas do plasma, proteínas das cápsulas virais e toxinas bacterianas. Elas agem clivando o carboxi-terminal de um aminoácido básico dentro de uma seqüência característica: Arg/Lis/His/X/X/Lis/Arg/Arg, onde X pode ser um aminoácido diferente da cisteína. Outros dois tipos de pró-convertases são encontrados, o SKI-1 (subtilisin kexin isozyme 1) ou S1P (site 1 protease), e NARC-1 (neural apoptosis regulated convertases), que clivam o terminal carboxílico de aminoácidos não básicos. Numerosos estudos revelaram vários papéis funcionais das pró-convertases em doenças como tumores, diabetes mellitus, infecções e doenças neurodegenerativas como o Alzheimer. (pt)
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  • Proprotein convertases (PPCs) are a family of proteins that activate other proteins. Many proteins are inactive when they are first synthesized, because they contain chains of amino acids that block their activity. Proprotein convertases remove those chains and activate the protein. The prototypical proprotein convertase is furin. Proprotein convertases have medical significance, because they are involved in many important biological processes, such as cholesterol synthesis. Compounds called proprotein convertase inhibitors can block their action, and block the target proteins from becoming active. Many proprotein convertases, especially furin and PACE4, are involved in pathological processes such as viral infection, inflammation, hypercholesterolemia, and cancer, and have been postulated (en)
  • As pró-convertases são um dos sete membros da família das , que ativam proteínas por clivagem. A expressão de pró-convertases varia muito, e todas as células expressam mais de um tipo delas. As pró-convertases agem em vários substratos como: , hormônios peptídeos, fatores de crescimento e diferenciação, receptores, enzimas, moléculas de adesão, fatores de coagulação sanguínea, proteínas do plasma, proteínas das cápsulas virais e toxinas bacterianas. (pt)
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  • Proprotein convertase (en)
  • Pró-convertase (pt)
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