※ Perinucleolar compartment introduction The perinucleolar compartment (PNC) is a dynamic, irregularly shaped, and electron-dense nuclear structure that is physically associated with the nucleolus. It is found predominantly in transformed cells and various cancer tissues, and rarely in normal cells (1). The components of the PNC described to date include several small RNAs transcribed by RNA polymerase (pol) III, and several RNA binding proteins of which some are primarily implicated in pre-messenger RNA (mRNA) processing. As a kind of PMLOs, The PNC is a dynamic functional organelle involved in the metabolism and trafficking of a subset of newly synthesized pol III RNAs in transformed cells (2).
Reference
1. Robbins, E., Jentzsch, G., & Micali, A. (1968) The centriole cycle in synchronized HeLa cells. J Cell Biol, 36(2), 329-339. PMID: 5638885
2. Slusarczyk, A., & Huang, S. (2008) The perinucleolar compartment (PNC): detection by immunohistochemistry. Methods Mol Biol, 463, 161-167. PMID: 18951167
Perinucleolar compartment in eukaryotes (Total number, Predicted number):
1. Robbins, E., Jentzsch, G., & Micali, A. (1968) The centriole cycle in synchronized HeLa cells. J Cell Biol, 36(2), 329-339. PMID: 5638885
2. Slusarczyk, A., & Huang, S. (2008) The perinucleolar compartment (PNC): detection by immunohistochemistry. Methods Mol Biol, 463, 161-167. PMID: 18951167
Perinucleolar compartment in eukaryotes (Total number, Predicted number):