Functional studies of the deubiquitinating enzymes USP19, USP4 and UCH-L1

El marcaje de proteínas con ubiquitina, conocido como ubiquitinación, cumple diferentes funciones que incluyen la regulación de varios procesos celulares, tales como: la degradación de proteínas por medio del proteosoma, la reparación del ADN, la señalización mediada por receptores de membrana, y la endocitosis, entre otras (1). Las moléculas de ubiquitina pueden ser removidas de sus sustratos gracias a la acción de un gran grupo de proteasas, llamadas enzimas deubiquitinizantes (DUBs) (2). Las DUBs son esenciales para la manutención de la homeostasis de la ubiquitina y para la regulación del estado de ubiquitinación de diferentes sustratos. El gran número y la diversidad de DUBs descritas refleja tanto su especificidad como su utilización para regular un amplio espectro de sustratos y vías celulares. Aunque muchas DUBs han sido estudiadas a profundidad, actualmente se desconocen los sustratos y las funciones biológicas de la mayoría de ellas. En este trabajo se investigaron las funciones de las DUBs: USP19, USP4 y UCH-L1. Utilizando varias técnicas de biología molecular y celular se encontró que: i) USP19 es regulada por las ubiquitin ligasas SIAH1 y SIAH2 ii) USP19 es importante para regular HIF-1α, un factor de transcripción clave en la respuesta celular a hipoxia, iii) USP4 interactúa con el proteosoma, iv) La quimera mCherry-UCH-L1 reproduce parcialmente los fenotipos que nuestro grupo ha descrito previamente al usar otros constructos de la misma enzima, y v) UCH-L1 promueve la internalización de la bacteria Yersinia pseudotuberculosis.

Gastos del Colegio Mayor del Rosario entre 1663 – 1798

Gastos del Colegio Mayor del Rosario entre 1663 – 1798 siendo rectores: Enrique de Caldas Barbosa y Santiago (1667-1668, 1670-1672, 1680-1682), Nicolás de Guzmán y Solanilla (1669 - 1670), Juan de Mosquera Nuguerol y Sotelo (1666-1667,1673-1676), Francisco de Agudelo Arias de Bolívar (1692-1693), Cristóbal de Torres Bravo (1683-1684, 1698-1701), Luis Antonio de Berrio y Mendoza de Castrillón (1715-1717, 1725-1728), Fernando Antonio Camacho de Guzmán y Rojas (1711-1714, 1728-1733), José Joaquín de León y Herrera (1759- 1763), Miguel José Masústegui y Archer Calzada (1745, 1763-1766, 1769-1773, 1778-1780), Bartolomé Ramírez Maldonado de la Parra (1766-1769), Manuel de Caicedo y Vélez Ladrón de Guevara (1772-1775), Pedro José de Leyva y la Madrid (1722-1725), José Joaquín de Guzmán y Franqui (1775-1778), Fernando de Caicedo Y Flórez (1793-1796, 1799-1802).

Noucentisme i anglof??lia : Matthew Arnold en l???obra pedag??gica de Joan Palau Vera (1905-1919)

Resumen basado en el de la publicaci??n

Les pedagogies de la masculinitat : Thomas Arnold i el ???Muscular Christianity???

Resumen basado en el de la publicaci??n

Com s???ha narrat el 1714 a les escoles catalanes del 2014?

Resumen basado en el de la publicaci??n

Thomas Arnold, Pere Verg??s i els jocs organitzats : els escacs, un projecte educatiu a l???Escola del Mar

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Of tropics, prisons and bicycles: a conversation with David Arnold

David Arnold who retired this year as the Professor of Asian and Global History at the University of Warwick remains one of the most prolific historians of colonial medicine and modern South Asia. A founding member of the subaltern studies collective, he is considered widely as a pioneer in the histories of colonial medicine, environment, penology, hunger and famines within South Asian studies and beyond. In this interview he recalls his formative inspirations, ideological motivations and reflects critically on his earlier works, explaining various shifts as well as map- ping the possible course of future work. He talks at length about his forthcoming works on everyday technology, food and monsoon Asia. Finally, he shares with us his desire of initiating work on an ambitious project about the twin themes of poison and poverty in South Asian his- tory, beginning with the Bengal famine in the late eighteenth century and ending with the Bhopal gas tragedy of the early 1980s. This conversation provides insights into the ways in which the field of medical history in modern South Asia has been shaped over the past three decades through interactions with broader discussions on agency, resistance, power, everydayness, subal- tern studies, global and spatial histories. It hints further at the newer directions which are being opened up by such persisting intellectual entanglements.

Arnold v. Britton: a ratio and two sets of obiter dicta

Arnold v Britton marks the final stage of the longstanding dispute as to the correct interpretation of a number of 99-year leases of chalets on a leisure park at Oxwich, in the Gower peninsula, near Swansea. The aspect of the case which has attracted most discussion has, understandably, been its main ratio: the proper way to construe a provision of a lease which arguably has an absurd result. This will be considered in this case-note. The judgment of the Supreme Court – particularly the judgment of Lord Neuberger PSC – does, however contain some observations on the possible reform of the law on service charges which are of interest to those engaged in this field. It also contains some obiter comments on ‘letting schemes’ which are – in the view of the present author – highly unorthodox. These three rather disparate issues which are raised by this case will be considered in turn. As they have little in common with each other, they will be considered as separate sections.