Arabidopsis thaliana      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 12 genes.  Reviewed (3 or Unreviewed (9

No.StatusDrLLPS IDEnsemble Gene IDUniProt AccessionGene Name
1
LLPS-Art-0603
AT1G48410
O04379
AGO1
2
LLPS-Art-0793
AT3G60840
Q9LZY0
MAP65-4
3
LLPS-Art-0599
AT1G07370
Q9M7Q7
PCNA
4
LLPS-Art-2979
AT3G03300
Q3EBC8
At3g03300
5
LLPS-Art-2974
AT3G23060
Q9LS86
At3g23060
6
LLPS-Art-2865
AT5G52140
Q1PDK3
At5g52140
7
LLPS-Art-1954
AT3G20740
Q9LT47
FIE
8
LLPS-Art-1946
AT1G02580
O65312
MEA
9
LLPS-Art-2342
AT5G58230
O22467
MSI1
10
LLPS-Art-2391
AT1G03770
Q0WX00
RING1B
11
LLPS-Art-2482
AT1G52160
Q8VYS2
TRZ3
12
LLPS-Art-2807
AT4G06634
Q2V3L3
YY1