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SUMO PATHWAY

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Cerrado

Structural and functional studies on the SUMO modification Pathway

The Small Ubiquitin-related MOdifier (SUMO) belongs to a family of proteins that become covalently attached to other proteins as post-translational modifications. Proteins that are modified by SUMO participate in diverse cellular... ver más

31/12/2011

UAB

100K€

Presupuesto del proyecto: 100K€

Líder del proyecto

UNIVERSITAT AUTÒNOMA DE BARCELONA No se ha especificado una descripción o un objeto social para esta compañía.

Total investigadores 1265

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2011-12-31 No tenemos la información de la convocatoria

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1 Participantes

UAB

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Líder del proyecto

UNIVERSITAT AUTÒNOMA DE BARCELONA No se ha especificado una descripción o un objeto social para esta compañía.

Total investigadores 1265

Presupuesto del proyecto 100K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto The Small Ubiquitin-related MOdifier (SUMO) belongs to a family of proteins that become covalently attached to other proteins as post-translational modifications. Proteins that are modified by SUMO participate in diverse cellular processes, including transcriptional regulation, nuclear transport, maintenance of genome integrity, and signal transduction. Conjugation (or modification) by SUMO is controlled by an enzyme pathway analogous to the ubiquitin pathway. The functional consequences of SUMO attachment vary greatly from substrate to substrate. Frequently, SUMO alters interactions of substrates with other proteins or with DNA, but SUMO can also act by blocking ubiquitin attachment sites. An unusual feature of SUMO modification is that only a small fraction of the substrate is sumoylated at any given time, so the consequences of conjugation are not proportionate to such small fraction of modified substrates. Control of SUMO conjugation seems to be a dynamic process of conjugation by SUMO E3 ligase and deconjugation by SUMO isopeptidases. There are many aspects of the SUMO pathway that are still not very well understood. For instance, a few number of SUMO E3 ligases have been reported despite the high number of substrates modified by SUMO, and it is not clear how those known SUMO E3s ligases work. Additionally, even though the emerging role of non-covalent protein-protein interaction by the SUMO binding motifs (SBM) in the regulation of several SUMO modification outcomes, only few bona fide examples have been reported so far. Finally, biochemical and bioinformatic approaches have identified in mammals several members of the SUMO Ulp/Senp protease family.The precise physiological role for SUMO proteases is still relatively unclear, although recent reports support the hypothesis that Senp family members participate in non-redundant cellular functions and that these proteases are regulated by cellular localization dictated by their non-homologous N-terminal domain.

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