snurposome
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A snurposome is a granular structure in the nuclei of amphibian oocytes. Snurposomes contain
snRNP snRNPs (pronounced "snurps"), or small nuclear ribonucleoproteins, are RNA-protein complexes that combine with unmodified pre-mRNA and various other proteins to form a spliceosome, a large RNA-protein molecular complex upon which splicing of pre- ...
s and are divided into the subtypes A, B, and C. A B snurposome is composed of thousands of particles which have diameters between 20 and 30 nanometers. B snurposomes may be forms of splicing speckles.


References

* * Nuclear substructures {{cell-biology-stub