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Min Kyung Shinn: Nuclear speckles organisation by multi-domain RNA binding proteins as block copolymers
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Min Kyung Shinn: Nuclear speckles organisation by multi-domain RNA binding proteins as block copolymers

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The event takes place on 20 November 2026 at the Royal School Of Mines in London and features a talk titled Nuclear speckles organisation by multi-domain RNA binding proteins as block copolymers. The presentation explores how specific patterns of inter-domain interactions among folded domains and intrinsically disordered regions drive microphase separation of SRSF1. Ordered assemblies comprising tens of molecules form with diameters between 23-45 nm during this process.

Nuclear speckles organisation by multi-domain RNA binding proteins as block copolymers The phase behaviour of multi-domain proteins can be driven by specific patterns of inter-domain interactions among the folded domains and intrinsically disordered regions (IDRs). The nuclear speckle-associated serine/arginine-rich splicing factors (SRSFs) are RNA binding proteins with one or two pairs of folded RNA recognition motifs and IDRs with characteristic serine/arginine repeats. We find that the SRSF family proteins are a unique archetype of block copolymers with attractive RRM-IDR interactions and repulsive RRM-RRM and IDR-IDR interactions. The interplay of these interactions drives microphase separation of SRSF1 and the formation of ordered, size-limited assemblies of 23-45 nm in diameter, each comprising tens of molecules. The cognate long non-coding RNA, MALAT1 , promotes SRSF1 microphase separation and regulates SRSF1 interactions with coding regions towards a model for the role of SRSF1 condensates in facilitating co-transcriptional splicing of pre-mRNA.

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Min Kyung Shinn: Nuclear speckles organisation by multi-domain RNA binding proteins as block copolymers takes place on Friday, 20 November 2026 at 15:00.

Min Kyung Shinn: Nuclear speckles organisation by multi-domain RNA binding proteins as block copolymers is held at Royal School Of Mines, South Kensington Campus in London (RSM 303, Royal School Of Mines, SW7 2AZ).

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