Abstract
Transcription initiation factor TFIID is a multimeric protein complex that plays a central role in mediating promoter responses to various activators and repressors. To further understand the role of the 85-kDa TFIID subunit (p85), we have cloned the corresponding cDNA with a probe based on an amino acid sequence of the purified protein. The recombinant p85 interacts directly with both the TATA box-binding subunit (TFIID tau or TBP) and the 110-kDa subunit (p110) of TFIID, suggesting that p85 may play a role in helping to anchor p110 within the TFIID complex and, with other studies, that TFIID assembly and function may involve a concerted series of subunit interactions. Interestingly, the carboxy terminus of p85 contains eight of the WD-40 repeats found originally in the beta subunit of G proteins and more recently in other transcriptional regulatory factors. However, truncated p85 lacking all the WD-40 repeats maintained interactions with both TFIID tau and p110. These observations leave open the possibility of a distinct function for the WD-40 repeats, possibly in transducing signals by interactions with transcriptional regulators and/or other components of the basic transcriptional machinery.
Full text
PDF




Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Brou C., Chaudhary S., Davidson I., Lutz Y., Wu J., Egly J. M., Tora L., Chambon P. Distinct TFIID complexes mediate the effect of different transcriptional activators. EMBO J. 1993 Feb;12(2):489–499. doi: 10.1002/j.1460-2075.1993.tb05681.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Chiang C. M., Ge H., Wang Z., Hoffmann A., Roeder R. G. Unique TATA-binding protein-containing complexes and cofactors involved in transcription by RNA polymerases II and III. EMBO J. 1993 Jul;12(7):2749–2762. doi: 10.1002/j.1460-2075.1993.tb05936.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Deng X. W., Matsui M., Wei N., Wagner D., Chu A. M., Feldmann K. A., Quail P. H. COP1, an Arabidopsis regulatory gene, encodes a protein with both a zinc-binding motif and a G beta homologous domain. Cell. 1992 Nov 27;71(5):791–801. doi: 10.1016/0092-8674(92)90555-q. [DOI] [PubMed] [Google Scholar]
- Drapkin R., Merino A., Reinberg D. Regulation of RNA polymerase II transcription. Curr Opin Cell Biol. 1993 Jun;5(3):469–476. doi: 10.1016/0955-0674(93)90013-g. [DOI] [PubMed] [Google Scholar]
- Dynlacht B. D., Hoey T., Tjian R. Isolation of coactivators associated with the TATA-binding protein that mediate transcriptional activation. Cell. 1991 Aug 9;66(3):563–576. doi: 10.1016/0092-8674(81)90019-2. [DOI] [PubMed] [Google Scholar]
- Dynlacht B. D., Weinzierl R. O., Admon A., Tjian R. The dTAFII80 subunit of Drosophila TFIID contains beta-transducin repeats. Nature. 1993 May 13;363(6425):176–179. doi: 10.1038/363176a0. [DOI] [PubMed] [Google Scholar]
- Fong H. K., Hurley J. B., Hopkins R. S., Miake-Lye R., Johnson M. S., Doolittle R. F., Simon M. I. Repetitive segmental structure of the transducin beta subunit: homology with the CDC4 gene and identification of related mRNAs. Proc Natl Acad Sci U S A. 1986 Apr;83(7):2162–2166. doi: 10.1073/pnas.83.7.2162. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hartley D. A., Preiss A., Artavanis-Tsakonas S. A deduced gene product from the Drosophila neurogenic locus, enhancer of split, shows homology to mammalian G-protein beta subunit. Cell. 1988 Dec 2;55(5):785–795. doi: 10.1016/0092-8674(88)90134-1. [DOI] [PubMed] [Google Scholar]
- Hernandez N. TBP, a universal eukaryotic transcription factor? Genes Dev. 1993 Jul;7(7B):1291–1308. doi: 10.1101/gad.7.7b.1291. [DOI] [PubMed] [Google Scholar]
- Hisatake K., Hasegawa S., Takada R., Nakatani Y., Horikoshi M., Roeder R. G. The p250 subunit of native TATA box-binding factor TFIID is the cell-cycle regulatory protein CCG1. Nature. 1993 Mar 11;362(6416):179–181. doi: 10.1038/362179a0. [DOI] [PubMed] [Google Scholar]
- Hoey T., Weinzierl R. O., Gill G., Chen J. L., Dynlacht B. D., Tjian R. Molecular cloning and functional analysis of Drosophila TAF110 reveal properties expected of coactivators. Cell. 1993 Jan 29;72(2):247–260. doi: 10.1016/0092-8674(93)90664-c. [DOI] [PubMed] [Google Scholar]
- Horikoshi M., Carey M. F., Kakidani H., Roeder R. G. Mechanism of action of a yeast activator: direct effect of GAL4 derivatives on mammalian TFIID-promoter interactions. Cell. 1988 Aug 26;54(5):665–669. doi: 10.1016/s0092-8674(88)80011-4. [DOI] [PubMed] [Google Scholar]
- Horikoshi M., Hai T., Lin Y. S., Green M. R., Roeder R. G. Transcription factor ATF interacts with the TATA factor to facilitate establishment of a preinitiation complex. Cell. 1988 Sep 23;54(7):1033–1042. doi: 10.1016/0092-8674(88)90118-3. [DOI] [PubMed] [Google Scholar]
- Ingles C. J., Shales M., Cress W. D., Triezenberg S. J., Greenblatt J. Reduced binding of TFIID to transcriptionally compromised mutants of VP16. Nature. 1991 Jun 13;351(6327):588–590. doi: 10.1038/351588a0. [DOI] [PubMed] [Google Scholar]
- Keleher C. A., Redd M. J., Schultz J., Carlson M., Johnson A. D. Ssn6-Tup1 is a general repressor of transcription in yeast. Cell. 1992 Feb 21;68(4):709–719. doi: 10.1016/0092-8674(92)90146-4. [DOI] [PubMed] [Google Scholar]
- Kokubo T., Gong D. W., Roeder R. G., Horikoshi M., Nakatani Y. The Drosophila 110-kDa transcription factor TFIID subunit directly interacts with the N-terminal region of the 230-kDa subunit. Proc Natl Acad Sci U S A. 1993 Jul 1;90(13):5896–5900. doi: 10.1073/pnas.90.13.5896. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kokubo T., Gong D. W., Yamashita S., Horikoshi M., Roeder R. G., Nakatani Y. Drosophila 230-kD TFIID subunit, a functional homolog of the human cell cycle gene product, negatively regulates DNA binding of the TATA box-binding subunit of TFIID. Genes Dev. 1993 Jun;7(6):1033–1046. doi: 10.1101/gad.7.6.1033. [DOI] [PubMed] [Google Scholar]
- Kokubo T., Takada R., Yamashita S., Gong D. W., Roeder R. G., Horikoshi M., Nakatani Y. Identification of TFIID components required for transcriptional activation by upstream stimulatory factor. J Biol Chem. 1993 Aug 15;268(23):17554–17558. [PubMed] [Google Scholar]
- Kunkel T. A., Roberts J. D., Zakour R. A. Rapid and efficient site-specific mutagenesis without phenotypic selection. Methods Enzymol. 1987;154:367–382. doi: 10.1016/0076-6879(87)54085-x. [DOI] [PubMed] [Google Scholar]
- Mitchell P. J., Tjian R. Transcriptional regulation in mammalian cells by sequence-specific DNA binding proteins. Science. 1989 Jul 28;245(4916):371–378. doi: 10.1126/science.2667136. [DOI] [PubMed] [Google Scholar]
- Poole S. J., Kauvar L. M., Drees B., Kornberg T. The engrailed locus of Drosophila: structural analysis of an embryonic transcript. Cell. 1985 Jan;40(1):37–43. doi: 10.1016/0092-8674(85)90306-x. [DOI] [PubMed] [Google Scholar]
- Roeder R. G. The complexities of eukaryotic transcription initiation: regulation of preinitiation complex assembly. Trends Biochem Sci. 1991 Nov;16(11):402–408. doi: 10.1016/0968-0004(91)90164-q. [DOI] [PubMed] [Google Scholar]
- Ruppert S., Wang E. H., Tjian R. Cloning and expression of human TAFII250: a TBP-associated factor implicated in cell-cycle regulation. Nature. 1993 Mar 11;362(6416):175–179. doi: 10.1038/362175a0. [DOI] [PubMed] [Google Scholar]
- Takada R., Nakatani Y., Hoffmann A., Kokubo T., Hasegawa S., Roeder R. G., Horikoshi M. Identification of human TFIID components and direct interaction between a 250-kDa polypeptide and the TATA box-binding protein (TFIID tau). Proc Natl Acad Sci U S A. 1992 Dec 15;89(24):11809–11813. doi: 10.1073/pnas.89.24.11809. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tanese N., Pugh B. F., Tjian R. Coactivators for a proline-rich activator purified from the multisubunit human TFIID complex. Genes Dev. 1991 Dec;5(12A):2212–2224. doi: 10.1101/gad.5.12a.2212. [DOI] [PubMed] [Google Scholar]
- Weinzierl R. O., Dynlacht B. D., Tjian R. Largest subunit of Drosophila transcription factor IID directs assembly of a complex containing TBP and a coactivator. Nature. 1993 Apr 8;362(6420):511–517. doi: 10.1038/362511a0. [DOI] [PubMed] [Google Scholar]
- Williams F. E., Varanasi U., Trumbly R. J. The CYC8 and TUP1 proteins involved in glucose repression in Saccharomyces cerevisiae are associated in a protein complex. Mol Cell Biol. 1991 Jun;11(6):3307–3316. doi: 10.1128/mcb.11.6.3307. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Workman J. L., Abmayr S. M., Cromlish W. A., Roeder R. G. Transcriptional regulation by the immediate early protein of pseudorabies virus during in vitro nucleosome assembly. Cell. 1988 Oct 21;55(2):211–219. doi: 10.1016/0092-8674(88)90044-x. [DOI] [PubMed] [Google Scholar]
- Yamashita S., Hisatake K., Kokubo T., Doi K., Roeder R. G., Horikoshi M., Nakatani Y. Transcription factor TFIIB sites important for interaction with promoter-bound TFIID. Science. 1993 Jul 23;261(5120):463–466. doi: 10.1126/science.8332911. [DOI] [PubMed] [Google Scholar]
- Zhang M., Rosenblum-Vos L. S., Lowry C. V., Boakye K. A., Zitomer R. S. A yeast protein with homology to the beta-subunit of G proteins is involved in control of heme-regulated and catabolite-repressed genes. Gene. 1991 Jan 15;97(2):153–161. doi: 10.1016/0378-1119(91)90047-f. [DOI] [PubMed] [Google Scholar]
- Zhou Q., Lieberman P. M., Boyer T. G., Berk A. J. Holo-TFIID supports transcriptional stimulation by diverse activators and from a TATA-less promoter. Genes Dev. 1992 Oct;6(10):1964–1974. doi: 10.1101/gad.6.10.1964. [DOI] [PubMed] [Google Scholar]
- van der Voorn L., Ploegh H. L. The WD-40 repeat. FEBS Lett. 1992 Jul 28;307(2):131–134. doi: 10.1016/0014-5793(92)80751-2. [DOI] [PubMed] [Google Scholar]