Drosophila melanogaster      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 11 genes.  Reviewed (0 or Unreviewed (11

No.StatusDrLLPS IDEnsemble Gene IDUniProt AccessionGene Name
1
LLPS-Drm-2288
FBgn0035872
Q9VSH4
CG7185
2
LLPS-Drm-0646
FBgn0039730
Q9VAC9
cg7903
3
LLPS-Drm-0587
FBgn0039183
Q9VC93
Dis3
4
LLPS-Drm-0570
FBgn0036317
Q9VU18
DmelCG10948
5
LLPS-Drm-0126
FBgn0011640
Q94901
lark
6
LLPS-Drm-2222
FBgn0028717
A0A0B4LHY5
Lnk
7
LLPS-Drm-0149
FBgn0002774
P24785
mle
8
LLPS-Drm-2087
FBgn0004227
Q04047
nonA
9
LLPS-Drm-0647
FBgn0005648
Q7KNF2
Pabp2
10
LLPS-Drm-1427
FBgn0034744
Q9W236
Vps20
11
LLPS-Drm-1579
FBgn0260990
Q9VAH7
yata