Ciona intestinalis      Paraspeckle


※ Paraspeckle introduction

    Paraspeckles are mammalian-specific nuclear bodies that often lie adjacent to splicing speckles, containing several multifunctional proteins, including PSF (PTB-associated splicing factor), p54nrb, PSP1andRBM14/CoAA/PSP2 (here- after referred to CoAA) (1), the long noncoding RNA NEAT1 assembles these protein components and is critical for paraspeckle formation. DIS3 was proved to be involved in controlling the formation of paraspeckles, nuclear bodies that are organized around NEAT1 lncRNA, whose short form was overexpressed in cells with mutated DIS3 (2). Paraspeckles regulate gene expression through a number of mechanisms, including sequestration of specific transcription factors and/or hyperedited mRNAs (3). Besides, RNA editing by the enzyme ADAR (Adenosine deaminase acting on RNA) was proved to occur in paraspeckles (4).

Reference
1. Chang, S. H., Chang, W. L., Lu, C. C., & Tarn, W. Y. (2014) Alanine repeats influence protein localization in splicing speckles and paraspeckles. Nucleic Acids Res, 42(22), 13788-13798. PMID: 25414336
2. Szczepinska, T., Kalisiak, K., Tomecki, R., Labno, A., Borowski, L. S., Kulinski, T. M., et al. (2015) DIS3 shapes the RNA polymerase II transcriptome in humans by degrading a variety of unwanted transcripts. Genome Res, 25(11), 1622-1633. PMID: 26294688
3. Adriaens, C., Standaert, L., Barra, J., Latil, M., Verfaillie, A., Kalev, P., et al. (2016) p53 induces formation of NEAT1 lncRNA-containing paraspeckles that modulate replication stress response and chemosensitivity. Nat Med, 22(8), 861-868. PMID: 27376578
4. Banerjee, A., Vest, K. E., Pavlath, G. K., & Corbett, A. H. (2017) Nuclear poly(A) binding protein 1 (PABPN1) and Matrin3 interact in muscle cells and regulate RNA processing. Nucleic Acids Res, 45(18), 10706-10725. PMID: 28977530


There are 12 genes.  Reviewed (0 or Unreviewed (12

No.StatusDrLLPS IDEnsemble Gene IDUniProt AccessionGene Name
1
LLPS-Cii-0263
ENSCING00000000033.3
F6VVP4
2
LLPS-Cii-0299
ENSCING00000004050.3
F6RWR9
3
LLPS-Cii-0483
ENSCING00000020168.1
H2Y1J7
4
LLPS-Cii-1001
ENSCING00000007407.3
F6RZ45
5
LLPS-Cii-1076
ENSCING00000007792.3
F6X3A4
6
LLPS-Cii-1851
ENSCING00000017374.2
F7B1Z2
7
LLPS-Cii-2105
ENSCING00000025138.1
H2XS37
8
LLPS-Cii-0432
ENSCING00000000050.3
Q4H2Q6
Ci-Tardbp
9
LLPS-Cii-2331
ENSCING00000014946.2
F6VKK3
LOC100180662
10
LLPS-Cii-0349
ENSCING00000012468.2
F6UTK0
LOC100181118
11
LLPS-Cii-0972
ENSCING00000022975.1
H2XNI4
LOC100182370
12
LLPS-Cii-0526
ENSCING00000024053.1
H2XL55
LOC100187471