Snurposome

A snurposome is a granular structure in the nuclei of amphibian oocytes. Snurposomes contain snRNPs 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.[1] B snurposomes may be forms of splicing speckles.[2]

References

Gall, J. G.; Bellini, M; Wu, Z; Murphy, C (1999). "Assembly of the Nuclear Transcription and Processing Machinery: Cajal Bodies (Coiled Bodies) and Transcriptosomes". Molecular Biology of the Cell. 10 (12): 4385–4402. doi:10.1091/mbc.10.12.4385. PMC 25765. PMID 10588665.
Lamond, Angus I.; Spector, David L. (2003). "Nuclear speckles: A model for nuclear organelles". Nature Reviews Molecular Cell Biology. 4 (8): 605–12. doi:10.1038/nrm1172. PMID 12923522. Left-hand column, page 607.

Angus I. Lamond (2013). Pre-mRNA Processing. Springer Science & Business Media. pp. 164–165. ISBN 978-3-662-22325-3.
Wu, Z; Murphy, C; Wu, C. H.; Tsvetkov, A; Gall, J. G. (1993). "Snurposomes and coiled bodies". Cold Spring Harbor Symposia on Quantitative Biology. 58: 747–54. doi:10.1101/sqb.1993.058.01.082. PMID 7956092.

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[1] Gall, J. G.; Bellini, M; Wu, Z; Murphy, C (1999). "Assembly of the Nuclear Transcription and Processing Machinery: Cajal Bodies (Coiled Bodies) and Transcriptosomes". Molecular Biology of the Cell. 10 (12): 4385–4402. doi:10.1091/mbc.10.12.4385. PMC 25765. PMID 10588665.

[2] Lamond, Angus I.; Spector, David L. (2003). "Nuclear speckles: A model for nuclear organelles". Nature Reviews Molecular Cell Biology. 4 (8): 605–12. doi:10.1038/nrm1172. PMID 12923522. Left-hand column, page 607.