Caenorhabditis elegans      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 10 genes.  Reviewed (0 or Unreviewed (10

No.StatusDrLLPS IDEnsemble Gene IDUniProt AccessionGene Name
1
LLPS-Cae-1711
WBGene00012337
Q23215
CELE_W07G4.3
2
LLPS-Cae-1344
WBGene00008362
C1P629
cfim-2
3
LLPS-Cae-0502
WBGene00001001
Q17632
dis-3
4
LLPS-Cae-1784
WBGene00002052
P90900
ifa-4
5
LLPS-Cae-0445
WBGene00017778
B3GWA1
nono-1
6
LLPS-Cae-0779
WBGene00003904
Q93233
pabp-2
7
LLPS-Cae-0508
WBGene00004355
Q22307
rha-1
8
LLPS-Cae-0688
WBGene00004384
Q10667
rnp-1
9
LLPS-Cae-1086
WBGene00022812
Q23088
uvs-1
10
LLPS-Cae-1769
WBGene00022027
Q9BL60
vps-20