Abstract
RNA polymerase I (Pol I) transcription in the yeast Saccharomyces cerevisiae is greatly stimulated in vivo and in vitro by the multiprotein complex, upstream activation factor (UAF). UAF binds tightly to the upstream element of the rDNA promoter, such that once bound ( in vitro ), UAF does not readily exchange onto a competing template. Of the polypeptides previously identified in purified UAF, three are encoded by genes required for Pol I transcription in vivo : RRN5 , RRN9 , and RRN10 . Two others, p30 and p18, have remained uncharacterized. We report here that the N-terminal amino acid sequence, its mobility in gel electrophoresis, and the immunoreactivity of p18 shows that it is histone H3. In addition, histone H4 was found in UAF, and myc-tagged histone H4 could be used to affinity-purify UAF. Histones H2A and H2B were not detectable in UAF. These results suggest that histones H3 and H4 probably account for the strong binding of UAF to DNA and may offer a means by which general nuclear regulatory signals could be transmitted to Pol I.
References
32
Referenced
73
10.1073/pnas.88.9.3962
10.1073/pnas.88.16.7026
10.1101/gad.8.19.2349
10.1101/gad.10.7.887
10.1002/j.1460-2075.1996.tb00770.x
10.1093/nar/20.2.279
10.1093/nar/17.23.9661
10.1093/nar/19.19.5363
10.1074/jbc.271.35.21062
10.1128/MCB.16.11.6436
10.1101/gad.10.20.2551
- K E van Holde Chromatin (Springer, New York, 1988). / Chromatin by van Holde K E (1988)
- A Wolffe Chromatin: Structure and Function (Academic, London, 1992). / Chromatin: Structure and Function by Wolffe A (1992)
10.1146/annurev.bi.63.070194.001405
10.1038/355219a0
10.1016/S0092-8674(00)80073-2
10.1016/S0092-8674(00)81918-2
10.1128/mcb.11.8.4111-4120.1991
10.1093/genetics/122.1.19
10.1101/gad.2.2.150
10.1101/gad.10.10.1247
10.1016/0092-8674(95)90512-X
10.1016/S0092-8674(00)81326-4
10.1016/0092-8674(89)90790-3
10.1093/nar/21.10.2331
10.1016/S0092-8674(00)80211-1
10.1016/S0092-8674(00)81316-1
10.1016/0092-8674(76)90145-8
10.1073/pnas.88.15.6829
10.1073/pnas.90.22.10489
10.1038/38444
10.1038/380356a0
Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:31 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 2:48 p.m.) |
Indexed | 1 month, 2 weeks ago (July 11, 2025, 6:24 a.m.) |
Issued | 27 years, 8 months ago (Dec. 9, 1997) |
Published | 27 years, 8 months ago (Dec. 9, 1997) |
Published Online | 27 years, 8 months ago (Dec. 9, 1997) |
Published Print | 27 years, 8 months ago (Dec. 9, 1997) |
@article{Keener_1997, title={Histones H3 and H4 are components of upstream activation factor required for the high-level transcription of yeast rDNA by RNA polymerase I}, volume={94}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.94.25.13458}, DOI={10.1073/pnas.94.25.13458}, number={25}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Keener, John and Dodd, Jonathan A. and Lalo, Dominique and Nomura, Masayasu}, year={1997}, month=dec, pages={13458–13462} }