Chromatin remodelling and the transcription cycle Vikki M. Weake and Jerry L. Workman Transcription by RNA polymerase II (Pol II) occurs in the context of chromatin within a eukaryotic cell. Chromatin is generally inhibitory to transcription, so a variety of mechanisms are required to activate transcription from a nucleosomal template. One of the first steps is that large co-activator complexes interact with small activator proteins to identify gene promoters that are ready to be transcribed. Nucleosome remodelling complexes that use energy from ATP to move or displace Supplement to Nature Publishing Group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ȮECVKQPUCTGETKVKECNVQEQPVTQNVTCPUETKRVKQPQPC EJTQOCVKPVGORNCVG 6JGDKPFKPIQHRTQVGKP CEVKXCVQTU VQ URGEKȮE&0#TGEQIPKVKQPUGSWGPEGU KFGPVKȮGUVCTIGVRTQOQVGTUCUUKVGU YJGTGVTCPUETKRVKQPYKNNQEEWT &WTKPIVTCPUETKRVKQPGNQPICVKQPVJG RJQURJQT[NCVGFTGUKFWGUQPVJG%6& RTQXKFGDKPFKPIUKVGUHQTEJTQOCVKP OQFKȮGTUUWEJCU5'6& 5GVKP [GCUVCPFȯKGU YJKEJOGVJ[NCVGU *-'ȰEKGPVVTCPUETKRVKQP TGSWKTGUEJTQOCVKPTGOQFGNNKPID[ EQORNGZGUUWEJCU59+50(CPF 45%CPFJKUVQPGEJCRGTQPGUUWEJ CUVJG(#%6EQORNGZCPF526 0WENGQUQOGUOWUVDGFKURNCEGF CJGCFQH2QN++CPFTGCUUGODNGF HQNNQYKPIKVURCUUCIG*KUVQPG OQFKȮECVKQPUCTGECTGHWNN[TGIWNCVGF VQRTGXGPVKPCRRTQRTKCVG VTCPUETKRVKQPKPKVKCVKQPHTQOYKVJKP VJGEQFKPITGIKQPQHIGPGU %6& nucleosomes from DNA facilitate the recruitment and assembly of these complexes on the promoter and enable rapid gene activation. Even during transcription elongation, nucleosomes must be removed for efficient passage of the polymerase. Furthermore, these same nucleosomes must be reassembled rapidly and modified appropriately following passage of the polymerase to prevent inappropriate initiation of transcription from promoter-like elements within the coding region. 'ZCORNGQHCEVKXCVQTFGRGPFGPVTGETWKVOGPV ICNCEVQUGIGPGKPFWEVKQPKP[GCUV 2TQOQVGTUGNGEVKQP CPFTGEQIPKVKQP s)CNCEVQUG 7#5)#. #EVKXCVQT #EVKXCVQTUTGETWKVNCTIGOWNVK UWDWPKVEQCEVKXCVQTUUWEJCU /GFKCVQTVJGJKUVQPG CEGV[NVTCPUHGTCUGEQORNGZ5#)# CPFEJTQOCVKPTGOQFGNNKPI EQORNGZGU UWEJCU59+50( VJCVWUGVJGGPGTI[HTQO#62VQ OQXGQTFKURNCEGPWENGQUQOGUCV VJGRTQOQVGT 6CTIGVIGPG 4GEQIPKVKQP UKVG )GPGVTCPUETKRVKQP UVCTVUKVG 6GTOKPCVKQP CPFTGKPKVKCVKQP 6TCPUETKRVKQP GNQPICVKQP *KUVQPG FGCEGV[NCUG 5'6& &5+( JGVGTQFKOGT QH5RVCPF5RV %JTQOCVKP TGOQFGNNGT 6JGVTCPUETKRVKQPE[ENG #EGV[NCVKQP *-VTKOGVJ[NCVKQP )#( 52QP %6& 0'.( 2TQOQVGTRTQZKOCN RCWUGF2QN++ 2QUVJGCVUJQEM *5( 2#42 52 52 )#( 26'(D #UGEQPFUGTKGUQH RJQURJQT[NCVKQPGXGPVU ECVCN[UGFD[%&- YKVJKP26'(DCTG TGSWKTGFVQTGNGCUG2QN++ HTQOVJKURCWUGFUVCVG KPVQRTQFWEVKXG VTCPUETKRVKQPGNQPICVKQP 26'(DRJQURJQT[NCVGU VJG52QHVJG%6&CU YGNNCUTGUKFWGUQP0'.( CPF&5+( 2QN++ 52 52 6JGEGPVTCNE[ENGUJQYUUQOGQH VJGOCKPUVGRUKPVTCPUETKRVKQP#V FKȭGTGPVIGPGUFKȭGTGPVUVCIGU|QH VJKUE[ENGECPDGVJGMG[TGIWNCVQT[ TCVGFGVGTOKPKPI UVGRU/CP[ CURGEVUCTGEQPUGTXGFCOQPI URGEKGU KPVJGEGPVTCNRCPGNUJWOCP PQOGPENCVWTGKUOCKPN[WUGF 1PN[C UGNGEVKQPQHRTQVGKPUCPFEJTQOCVKP OQFKȮ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ȰEKGPVVQ TGETWKVVJGCEVKXCVKPIMKPCUG26'(DYJKEJRJQURJQT[NCVGUVJGKPJKDKVQT[ HCEVQTU0'.(CPF&5+(CUYGNNCUUGTKPGQHVJG%6&TGUWNVKPIKPTGNGCUGQH 2QN++KPVQRTQFWEVKXGVTCPUETKRVKQPGNQPICVKQP2#42ECVCN[UGUHQTOCVKQP QH#&2TKDQUGRQN[OGTUCPFCNQPIYKVJ*5(CPF)#(KUTGSWKTGFHQT PWENGQUQOGNQUUCV*URHQNNQYKPIJGCVUJQEM0WENGQUQOGNQUURTGEGGFU VJGRCUUCIGQH2QN++CPFHCEKNKVCVGUIGPGCEVKXCVKQP Abcam — tools for advancing epigenetics Abcam is a producer and distributor of high quality researchgrade antibodies and associated proteomics research products; antibodies are essential tools for life scientists that enable them to analyze components of living cells at the molecular level. Our catalogue of over 78,000 products includes antibodies, proteins, peptides, lysates, immunoassays, kits and more. 2QN++ 2QN++ O40# #VUQOGIGPGUCȎGT2QN++VTCPUETKDGUCUJQTVFKUVCPEGKPVQ VJGIGPGKVRCWUGUCVCTGIKQPQH&0#MPQYPCUVJG RTQOQVGTRTQZKOCNRCWUGUKVG2QN++KURTGXGPVGFHTQO OQXKPIHQTYCTFHTQOVJKUTGIKQPD[KPJKDKVQT[HCEVQTUUWEJ CU0'.(CPF&5+( 0QVG0'.(KUPQVRTGUGPVKP[GCUV We have more than 30,000 products in the epigenetics and nuclear signaling field, including: • Chromatin remodelling • Chromosome structure • RNA/DNA • Ubiquitin signaling • Transcription • DNA methylation • Chromatin modifying enzymes • DNA damage Learn more at www.abcam.com/epigenetics. &5+( 0'.( Quality and honesty are our top priorities. Our Abpromise offers 100% support of any product purchased from Abcam or one of our authorized distributors. If our products do not perform as described on the datasheet, let us know so that we can help you or offer a replacement or refund. Visit our website today and see for yourself: www.abcam.com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ȎGTVJGRTGKPKVKCVKQPEQORNGZJCUHQTOGF%&-YKVJKP6(++* RJQURJQT[NCVGUVJGUGTKPGRQUKVKQP 52 YKVJKPVJGECTDQZ[VGTOKPCN FQOCKP %6& QHVJGNCTIGUVUWDWPKVQH2QN++#TQWPFVJGUCOGVKOGVJG &0#JGNKECUG:2$WPYKPFUsDCUGUQH&0#CVVJGRTQOQVGTVQ KPVTQFWEGCUKPINGUVTCPFGFVGORNCVGKPVQVJGCEVKXGUKVGQH2QN++ UGG ENQUGWRCDQXG 6TCPUETKRVKQPDGIKPUCU2QN++FKUUQEKCVGUHTQOOCP[QH VJGIGPGTCNVTCPUETKRVKQPHCEVQTUENGCTUVJGRTQOQVGTCPFDGIKPUVQ OCMG40#&WTKPIRTGKPKVKCVKQPEQORNGZHQTOCVKQPCPFRTQOQVGT ENGCTCPEGUGXGTCNFKȭGTGPVJKUVQPGOQFKȮECVKQPUCTGFGRQUKVGFQP PWENGQUQOGUCVVJGRTQOQVGTKPENWFKPI*-VTKOGVJ[NCVKQPCPF*$ OQPQWDKSWKV[NCVKQP UGGUKFGRCPGN 5GSWGPVKCNJKUVQPGOQFKȮECVKQPUQEEWTCVRTQOQVGTU *$WDKSWKV[NCVKQP *-VTKOGVJ[NCVKQP $WT 5GV 2+% %1/2#55 $TG 4CF 2#(EQORNGZ *KUVQPG*N[UKPG *- VTKOGVJ[NCVKQPKUCUUQEKCVGFYKVJ CEVKXGVTCPUETKRVKQP+P[GCUV VJKUOCTMKUFGRQUKVGFD[5GV YKVJKP%1/2#55 CPFTGSWKTGU RTKQTWDKSWKV[NCVKQPQHJKUVQPG *$D[4CFCPF$TG(QT UKORNKEKV[VJGUGRTQVGKPUCTG PQVUJQYPKPQVJGTRCPGNU References Abbreviations Acknowledgements Fuda, N. J., Ardehali, M. B. & Lis, J. T. Defining mechanisms that regulate RNA polymerase II transcription in vivo. Nature 461, 186–192 (2009) | Weake, V. M. & Workman, J. L. Inducible gene expression: diverse regulatory mechanisms. Nature Rev. Genet. 11, 426–437 (2010) | Kornberg, R. D. The molecular basis of eukaryotic transcription. Proc. Natl Acad. Sci. USA 104, 12955–12961 (2007) | Orphanides, G. & Reinberg, D. A unified theory of gene expression. Cell 108, 439–451 (2002) | Ptashne, M. & Gann, A. Transcriptional activation by recruitment. Nature 386, 569–577 (1997) | Roeder, R. G. Transcriptional regulation and the role of diverse coactivators in animal cells. FEBS Lett. 579, 909–915 (2005) CDK, cell division protein kinase; COMPASS, complex proteins associated with Set1; DSIF, DRB sensitivity-inducing factor; GAF, GAGA factor; HSF, heat shock factor; Hsp70, heat shock protein 70; NELF, negative elongation factor; PARP, poly(ADP)-ribose polymerase; P-TEFb, positive transcription elongation factor b; SWI/SNF, switch/sucrose non-fermentable; TBP, TATA box binding protein; TFII, transcription factor II; Tra1, transcription associated protein 1; UAS, upstream activating sequence The authors are at the Stowers Institute for Medical Research, Kansas City, Missouri, USA. They thank members of the Workman laboratory for helpful comments and suggestions during preparation of this poster. Edited by Mary Muers; copyedited by Lewis Packwood; designed by Patrick Morgan. © 2011 Nature Publishing Group. http://www.nature.com/nrg/posters/remodelling