The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)



Gene Review

RPT4  -  proteasome regulatory particle base...

Saccharomyces cerevisiae S288c

Synonyms: 26S protease subunit RPT4, 26S protease subunit SUG2, CRL13, PCS1, Proteasomal cap subunit, ...
Welcome! If you are familiar with the subject of this article, you can contribute to this open access knowledge base by deleting incorrect information, restructuring or completely rewriting any text. Read more.

High impact information on RPT4

  • Here, we demonstrate that proteasomal ATPases Rpt4 and Rpt6 function to connect these two histone modifications [1].
  • Consistent with their role in H3 methylation, we also find that mutations in Rpt4 and 6-but not components of the 20S proteasome-disrupt telomeric gene silencing [1].
  • Additionally, we have shown localization of a functional Pcs1-green fluorescent protein fusion to the nucleus throughout the cell cycle [2].
  • The Gal4 activation domain binds Sug2 protein, a proteasome component, in vivo and in vitro [3].
  • Additionally, we describe a genetic interaction between RPT4 and the naturally polymorphic gene SSD1, which in wild-type form modifies the rpt4-145 phenotype such that cells arrest in G2 of the first cycle with complete bipolar spindles [4].

Biological context of RPT4


Other interactions of RPT4

  • Sug1 and Sug2 are two of six ATPases in the 19S regulatory particle of the 26S proteasome [6].
  • The role of Rpn4p to function as a transregulator in yeast is corroborated by its ability of stimulating proteasome-associated control element-driven lacZ expression and by experiments using the RPT4 and RPT6 gene promoters coupled to the bacterial cat gene as a reporter [7].

Analytical, diagnostic and therapeutic context of RPT4

  • Evolutionary relationships based on sequence analysis show that both CADp44 and yeast Sug2p are distinct from the other five CAD ATPases found in the PA700, and together comprise the sixth and newest CAD subunit of the regulatory complex of the 26S proteasome [8].


  1. Proteasomal ATPases link ubiquitylation of histone H2B to methylation of histone H3. Ezhkova, E., Tansey, W.P. Mol. Cell (2004) [Pubmed]
  2. A proteasome cap subunit required for spindle pole body duplication in yeast. McDonald, H.B., Byers, B. J. Cell Biol. (1997) [Pubmed]
  3. The Gal4 activation domain binds Sug2 protein, a proteasome component, in vivo and in vitro. Chang, C., Gonzalez, F., Rothermel, B., Sun, L., Johnston, S.A., Kodadek, T. J. Biol. Chem. (2001) [Pubmed]
  4. Mutational analysis reveals a role for the C terminus of the proteasome subunit Rpt4p in spindle pole body duplication in Saccharomyces cerevisiae. McDonald, H.B., Helfant, A.H., Mahony, E.M., Khosla, S.K., Goetsch, L. Genetics (2002) [Pubmed]
  5. Kinetochore recruitment of two nucleolar proteins is required for homolog segregation in meiosis I. Rabitsch, K.P., Petronczki, M., Javerzat, J.P., Genier, S., Chwalla, B., Schleiffer, A., Tanaka, T.U., Nasmyth, K. Dev. Cell (2003) [Pubmed]
  6. The proteasomal ATPase complex is required for stress-induced transcription in yeast. Sulahian, R., Johnston, S.A., Kodadek, T. Nucleic Acids Res. (2006) [Pubmed]
  7. Rpn4p acts as a transcription factor by binding to PACE, a nonamer box found upstream of 26S proteasomal and other genes in yeast. Mannhaupt, G., Schnall, R., Karpov, V., Vetter, I., Feldmann, H. FEBS Lett. (1999) [Pubmed]
  8. CADp44: a novel regulatory subunit of the 26S proteasome and the mammalian homolog of yeast Sug2p. Bauer, V.W., Swaffield, J.C., Johnston, S.A., Andrews, M.T. Gene (1996) [Pubmed]
WikiGenes - Universities