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MinorSplice

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Cerrado

Functional and structural studies of the U12 dependent splicing in human cells

Introns are non-coding segment of eukaryotic genes, which are removed from precursors of messenger RNAs (pre-mRNAs) by a large and dynamic RNA-protein complex known as the spliceosome. In human cells, most of the introns are proce... ver más

31/12/2025

EMBL

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

EUROPEAN MOLECULAR BIOLOGY LABORATORY No se ha especificado una descripción o un objeto social para esta compañía.

Fecha límite participación Sin fecha límite de participación.

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Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2020-11-03

ERC-2020-STG: ERC STARTING GRANTS

I+D

Cerrada hace 5 años

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2 Participantes

EMBL

1.48M€ | Lider

BIOMET SPAIN ORTHOPAEDICS,S....

211.69K€ | Participante

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Duración del proyecto: 61 meses Fecha Inicio: 2020-11-03
Fecha Fin: 2025-12-31

Líder del proyecto

EUROPEAN MOLECULAR BIOLOGY LABORATORY No se ha especificado una descripción o un objeto social para esta compañía.

Presupuesto del proyecto 1M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Introns are non-coding segment of eukaryotic genes, which are removed from precursors of messenger RNAs (pre-mRNAs) by a large and dynamic RNA-protein complex known as the spliceosome. In human cells, most of the introns are processed by the canonical U2-dependent, major spliceosome. Around 0.5% of human introns utilise an alternative splicing pathway, catalysed by the minor spliceosome, which depends on the U12 small nuclear RNA (snRNA). While U12-dependent introns are rare, often they are located in genes with critical cellular functions and mutations in the minor spliceosome components lead to several genetic disorders. MinorSplice project aims to perform a comprehensive structural and functional characterization of the U12-dependent splicing pathway. The functional studies will be focused on the proteomic characterization of the minor spliceosome assembly intermediates and the involvement of the conserved spliceosomal RNA helicases in the U12-dependent splicing pathway. By combining cell-based assays, proteomics and next generation sequencing methods we will create a detailed picture of the minor spliceosome composition and associated regulatory mechanisms. The core of the projects aims to determine a series of minor spliceosome’s structures using single particle electron cryo microscopy (cryo-EM). We expect that high-resolution structural information will answer some of the fundamental mechanistic questions about the minor spliceosome assembly, U12-dependent intron recognition and will shed a light on structural similarities and differences between the major and minor splicing pathways. The last part of the project will aim to visualise spliceosomes in the native cellular environment using electron cryo tomography (cryo-ET). By doing so, we anticipate to obtain functional insights into the coupling between different nuclear processes.

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