Caenorhabditis elegans      PcG body


※ PcG body introduction

    PcG bodies, termed polycomb bodies, are subnuclear organelles containing polycomb group proteins. They are a kind of PMLOs located in nucleus, which possess liquid-like behavior and are believed to be formed as a result of biological liquid-liquid phase transitions, where an intricate interplay between RNA and intrinsically disordered proteins (IDPs) or hybrid proteins containing ordered domains and intrinsically disordered protein regions (IDPRs) may play an important role, they are formed as a result of highly regulated and reversible liquid-liquid demixing phase separation and represent condensed liquid droplets, which are invariantly enriched in intrinsically disordered proteins (1). They correspond to local accumulations of PcG proteins, which are important epigenetic regulators that control transcription of their target genes (2). Morover, Polycomb body–associated PHC2 was found to interact with the Polycomb repressive complex, which is relevant to the function of polycomb bodies in transcription regulation (3).

Reference
1. Uversky, V. N. (2017) MappingIntrinsically disordered proteins in overcrowded milieu: Membrane-less organelles, phase separation, and intrinsic disorder. Curr Opin Struct Biol, 44, 18-30. PMID: 27838525
2. Smigova, J., Juda, P., Krejci, J., & Raska, I. (2014) MappingStructural basis of polycomb bodies. Folia Biol (Praha), 60 Suppl 1, 13-20. PMID: 25369336
3. Fong, K. W., Li, Y., Wang, W., Ma, W., Li, K., Qi, R. Z., et al. (2013) MappingWhole-genome screening identifies proteins localized to distinct nuclear bodies. J Cell Biol, 203(1), 149-164. PMID: 24127217


There are 10 genes.  Reviewed (2 or Unreviewed (8

No.StatusDrLLPS IDEnsemble Gene IDUniProt AccessionGene Name
1
LLPS-Cae-0166
WBGene00000105
G5EES3
alg-1
2
LLPS-Cae-0249
WBGene00020111
Q21999
CELE_R151.8
3
LLPS-Cae-0986
WBGene00001983
O44476
hoe-1
4
LLPS-Cae-0613
WBGene00003036
P90916
lin-53
5
LLPS-Cae-0527
WBGene00003220
O17514
mes-2
6
LLPS-Cae-0935
WBGene00003224
Q9GYS1
mes-6
7
LLPS-Cae-1284
WBGene00003955
O02115
pcn-1
8
LLPS-Cae-0573
WBGene00020496
H2KYH3
spat-3
9
LLPS-Cae-2031
WBGene00004952
G5ED58
spd-1
10
LLPS-Cae-1707
WBGene00019953
H2L0H5
wapl-1