995 resultados para 734


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Reciprocal interactions between Src family kinases (SFKs) and focal adhesion kinase (FAK) are critical during changes in cell attachment. Recently it has been recognized that another SFK substrate, CUB-domain-containing protein 1 (CDCP1), is differentially phosphorylated during these events. However, the molecular processes underlying SFK-mediated phosphorylation of CDCP1 are poorly understood. Here we identify a novel mechanism in which FAK tyrosine 861 and CDCP1-Tyr-734 compete as SFK substrates and demonstrate cellular settings in which SFKs switch between these sites. Our results show that stable CDCP1 expression induces robust SFK-mediated phosphorylation of CDCP1-Tyr-734 with concomitant loss of p-FAK-Tyr-861 in adherent HeLa cells. SFK substrate switching in these cells is dependent on the level of expression of CDCP1 and is also dependent on CDCP1-Tyr-734 but is independent of CDCP1-Tyr-743 and -Tyr-762. In HeLa CDCP1 cells, engagement of SFKs with CDCP1 is accompanied by an increase in phosphorylation of Src-Tyr-416 and a change in cell morphology to a fibroblastic appearance dependent on CDCP1-Tyr-734. SFK switching between FAK-Tyr-861 and CDCP1-Tyr-734 also occurs during changes in adhesion of colorectal cancer cell lines endogenously expressing these two proteins. Consistently, increased p-FAK-Tyr-861 levels and a more epithelial morphology are seen in colon cancer SW480 cells silenced for CDCP1. Unlike protein kinase Cδ, FAK does not appear to form a trimeric complex with Src and CDCP1. These data demonstrate novel aspects of the dynamics of SFK-mediated cell signaling that may be relevant during cancer progression.

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Informa novo prazo para que constituintes apresentem suas propostas, para a nova carta. Texto sobre tabelamento dos juros em 12% provoca polêmica entre os constituintes. O PFL não aceitou e pretende tomar providências com relação à medida. A população que foi entrevistada, demonstrou grande satisfação com a medida e acredita que ela é justa para o país. Texto corrigido pela Comissão de Redação Final está sendo distribuído aos constituintes. Alguns constituintes sugeriram votação em separado, mas o Presidente Ulysses Guimarães garante que o regimento será cumprido, e que a votação do texto será em in loco, em um único dia.

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El lector tiene entre sus manos un manual esencialmente práctico, el interés ha sido sobre todo recopilar y ordenar los datos normativos y jurisprudenciales existentes en nuestro ordenamiento sobre régimen disciplinario de los funcionarios públicos

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El Código Disciplinario Único requiere un tratamiento que le permita a los servidores públicos adelantar y fallar con seguridad los procesos disciplinarios, respetando los derechos y garantías que el ordenamiento jurídico otorga a los investigados

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u.a.: unterschiedliche Rechtssysteme in Deutschland; Auseinandersetzung mit Karl Labes;

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