MCB
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Johnson, K. D.
Right arrow Articles by Bresnick, E. H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Johnson, K. D.
Right arrow Articles by Bresnick, E. H.

 Previous Article  |  Next Article 

Molecular and Cellular Biology, September 2003, p. 6484-6493, Vol. 23, No. 18
0270-7306/03/$08.00+0     DOI: 10.1128/MCB.23.18.6484-6493.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Highly Restricted Localization of RNA Polymerase II within a Locus Control Region of a Tissue-Specific Chromatin Domain

Kirby D. Johnson,1 Jeffrey A. Grass,1 Changwon Park,2 Hogune Im,1 Kyunghee Choi,2 and Emery H. Bresnick1*

Molecular and Cellular Pharmacology Program, Department of Pharmacology, Medical School, University of Wisconsin, Madison, Wisconsin 53706,1 Developmental Biology Program, Department of Pathology and Immunology, School of Medicine, Washington University, St. Louis, Missouri 631102

Received 29 April 2003/ Accepted 12 June 2003

RNA polymerase II (Pol II) can associate with regulatory elements far from promoters. For the murine ß-globin locus, Pol II binds the ß-globin locus control region (LCR) far upstream of the ß-globin promoters, independent of recruitment to and activation of the ßmajor promoter. We describe here an analysis of where Pol II resides within the LCR, how it is recruited to the LCR, and the functional consequences of recruitment. High-resolution analysis of the distribution of Pol II revealed that Pol II binding within the LCR is restricted to the hypersensitive sites. Blocking elongation eliminated the synthesis of genic and extragenic transcripts and eliminated Pol II from the ßmajor open reading frame. However, the elongation blockade did not redistribute Pol II at the hypersensitive sites, suggesting that Pol II is recruited to these sites. The distribution of Pol II did not strictly correlate with the distributions of histone acetylation and methylation. As Pol II associates with histone-modifying enzymes, Pol II tracking might be critical for establishing and maintaining broad histone modification patterns. However, blocking elongation did not disrupt the histone modification pattern of the ß-globin locus, indicating that Pol II tracking is not required to maintain the pattern.

* Corresponding author. Mailing address: Medical School, University of Wisconsin, Department of Pharmacology, 1300 University Ave., 383 Medical Sciences Center, Madison, WI 53706. Phone: (608) 265-6446. Fax: (608) 262-1257. E-mail: ehbresni{at}facstaff.wisc.edu.

Molecular and Cellular Biology, September 2003, p. 6484-6493, Vol. 23, No. 18
0022-538X/03/$08.00+0     DOI: 10.1128/MCB.23.18.6484-6493.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:



Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. J. Virol. Eukaryot. Cell
Microbiol. Mol. Biol. Rev. Clin. Vaccine Immunol. All ASM Journals

Copyright © 2003 by the American Society for Microbiology. All rights reserved.