TY - JOUR
T1 - Adenovirus E1A requires the yeast SAGA histone acetyltransferase complex and associates with SAGA components Gcn5 and Tra1
AU - Kulesza, Caroline A.
AU - Van Buskirk, Heather A.
AU - Cole, Michael D.
AU - Reese, Joseph C.
AU - Smith, M. Mitchell
AU - Engel, Daniel A.
N1 - Funding Information:
We thank David Allis and Shelley Berger for strains and plasmids and Patrick Grant for critically reading this manuscript. We also thank Ted Young for strains, plasmids and helpful discussions. CA Kulesza was supported in part by an NIH institutional training grant (5T32GM08136). This work was supported by grants from the National Institutes of Health awarded to DA Engel (CA60675 and CA87620) and MM Smith (GM28920).
PY - 2002
Y1 - 2002
N2 - The budding yeast Saccharomyces cerevisiae was used as a model system to study the function of the adenovirus E1A oncoprotein. Previously we demonstrated that expression of the N-terminal 82 amino acids of E1A in yeast causes pronounced growth inhibition and specifically interferes with SWI/SNF-dependent transcriptional activation. Further genetic analysis identified the yeast transcription factor Adr1 as a high copy suppressor of E1A function. Transcriptional activation by Adr1 requires interaction with co-activator proteins Ada2 and Gcn5, components of histone acetyltransferase complexes including ADA and SAGA. Analysis of mutant alleles revealed that several components of the SAGA complex, including proteins from the Ada, Spt, and Taf classes were required for E1A-induced growth inhibition. Growth inhibition also depended on the Gcn5 histone acetyltransferase, and point mutations within the Gcn5 HAT domain rendered cells E1A-resistant. Also required was SAGA component Tra1, a homologue of the mammalian TRRAP protein which is required for c-myc and E1A induced cellular transformation. Additionally, Gcn5 protein could associate with E1A in vitro in a manner that depended on the N-terminal domain of E1A, and Tral protein was coimmunoprecipitated with E1A in vivo. These results indicate a strong requirement for intact SAGA complex for E1A to function in yeast, and suggest a role for SAGA-like complexes in mammalian cell transformation.
AB - The budding yeast Saccharomyces cerevisiae was used as a model system to study the function of the adenovirus E1A oncoprotein. Previously we demonstrated that expression of the N-terminal 82 amino acids of E1A in yeast causes pronounced growth inhibition and specifically interferes with SWI/SNF-dependent transcriptional activation. Further genetic analysis identified the yeast transcription factor Adr1 as a high copy suppressor of E1A function. Transcriptional activation by Adr1 requires interaction with co-activator proteins Ada2 and Gcn5, components of histone acetyltransferase complexes including ADA and SAGA. Analysis of mutant alleles revealed that several components of the SAGA complex, including proteins from the Ada, Spt, and Taf classes were required for E1A-induced growth inhibition. Growth inhibition also depended on the Gcn5 histone acetyltransferase, and point mutations within the Gcn5 HAT domain rendered cells E1A-resistant. Also required was SAGA component Tra1, a homologue of the mammalian TRRAP protein which is required for c-myc and E1A induced cellular transformation. Additionally, Gcn5 protein could associate with E1A in vitro in a manner that depended on the N-terminal domain of E1A, and Tral protein was coimmunoprecipitated with E1A in vivo. These results indicate a strong requirement for intact SAGA complex for E1A to function in yeast, and suggest a role for SAGA-like complexes in mammalian cell transformation.
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U2 - 10.1038/sj.onc.1205201
DO - 10.1038/sj.onc.1205201
M3 - Article
C2 - 11857084
AN - SCOPUS:85047698064
VL - 21
SP - 1411
EP - 1422
JO - Oncogene
JF - Oncogene
SN - 0950-9232
IS - 9
ER -