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CryoEM and molecular dynamics of the circadian KaiB-KaiC complex indicates that KaiB monomers interact with KaiC and block ATP binding clefts.

Villarreal SA, Pattanayek R, Williams DR, Mori T, Qin X, Johnson CH, Egli M, Stewart PL.

J Mol Biol. 2013 Sep 23;425(18):3311-24. doi: 10.1016/j.jmb.2013.06.018. Epub 2013 Jun 22.


Nature of KaiB-KaiC binding in the cyanobacterial circadian oscillator.

Pattanayek R, Yadagiri KK, Ohi MD, Egli M.

Cell Cycle. 2013 Mar 1;12(5):810-7. doi: 10.4161/cc.23757. Epub 2013 Feb 6.


Structural model of the circadian clock KaiB-KaiC complex and mechanism for modulation of KaiC phosphorylation.

Pattanayek R, Williams DR, Pattanayek S, Mori T, Johnson CH, Stewart PL, Egli M.

EMBO J. 2008 Jun 18;27(12):1767-78. doi: 10.1038/emboj.2008.104. Epub 2008 May 22.


Combined SAXS/EM based models of the S. elongatus post-translational circadian oscillator and its interactions with the output His-kinase SasA.

Pattanayek R, Williams DR, Rossi G, Weigand S, Mori T, Johnson CH, Stewart PL, Egli M.

PLoS One. 2011;6(8):e23697. doi: 10.1371/journal.pone.0023697. Epub 2011 Aug 24.


Intermolecular associations determine the dynamics of the circadian KaiABC oscillator.

Qin X, Byrne M, Mori T, Zou P, Williams DR, McHaourab H, Johnson CH.

Proc Natl Acad Sci U S A. 2010 Aug 17;107(33):14805-10. doi: 10.1073/pnas.1002119107. Epub 2010 Aug 2.


Protein-Protein Interactions in the Cyanobacterial Circadian Clock: Structure of KaiA Dimer in Complex with C-Terminal KaiC Peptides at 2.8 Å Resolution.

Pattanayek R, Egli M.

Biochemistry. 2015 Aug 4;54(30):4575-8. doi: 10.1021/acs.biochem.5b00694. Epub 2015 Jul 24.


Loop-loop interactions regulate KaiA-stimulated KaiC phosphorylation in the cyanobacterial KaiABC circadian clock.

Egli M, Pattanayek R, Sheehan JH, Xu Y, Mori T, Smith JA, Johnson CH.

Biochemistry. 2013 Feb 19;52(7):1208-20. doi: 10.1021/bi301691a. Epub 2013 Feb 7.


Circadian oscillations of KaiA-KaiC and KaiB-KaiC complex formations in an in vitro reconstituted KaiABC clock oscillator.

Murakami R, Mutoh R, Ishii K, Ishiura M.

Genes Cells. 2016 Aug;21(8):890-900. doi: 10.1111/gtc.12392. Epub 2016 Aug 1.


Analysis of KaiA-KaiC protein interactions in the cyano-bacterial circadian clock using hybrid structural methods.

Pattanayek R, Williams DR, Pattanayek S, Xu Y, Mori T, Johnson CH, Stewart PL, Egli M.

EMBO J. 2006 May 3;25(9):2017-28. Epub 2006 Apr 20.


An arginine tetrad as mediator of input-dependent and input-independent ATPases in the clock protein KaiC.

Pattanayek R, Xu Y, Lamichhane A, Johnson CH, Egli M.

Acta Crystallogr D Biol Crystallogr. 2014 May;70(Pt 5):1375-90. doi: 10.1107/S1399004714003228. Epub 2014 Apr 30.


A novel allele of kaiA shortens the circadian period and strengthens interaction of oscillator components in the cyanobacterium Synechococcus elongatus PCC 7942.

Chen Y, Kim YI, Mackey SR, Holtman CK, Liwang A, Golden SS.

J Bacteriol. 2009 Jul;191(13):4392-400. doi: 10.1128/JB.00334-09. Epub 2009 Apr 24.


Structures of KaiC circadian clock mutant proteins: a new phosphorylation site at T426 and mechanisms of kinase, ATPase and phosphatase.

Pattanayek R, Mori T, Xu Y, Pattanayek S, Johnson CH, Egli M.

PLoS One. 2009 Nov 26;4(11):e7529. doi: 10.1371/journal.pone.0007529.


Cyanobacterial circadian pacemaker: Kai protein complex dynamics in the KaiC phosphorylation cycle in vitro.

Kageyama H, Nishiwaki T, Nakajima M, Iwasaki H, Oyama T, Kondo T.

Mol Cell. 2006 Jul 21;23(2):161-71.


The ATP-mediated regulation of KaiB-KaiC interaction in the cyanobacterial circadian clock.

Mutoh R, Nishimura A, Yasui S, Onai K, Ishiura M.

PLoS One. 2013 Nov 11;8(11):e80200. doi: 10.1371/journal.pone.0080200. eCollection 2013.


The day/night switch in KaiC, a central oscillator component of the circadian clock of cyanobacteria.

Kim YI, Dong G, Carruthers CW Jr, Golden SS, LiWang A.

Proc Natl Acad Sci U S A. 2008 Sep 2;105(35):12825-30. doi: 10.1073/pnas.0800526105. Epub 2008 Aug 26.


Insight into cyanobacterial circadian timing from structural details of the KaiB-KaiC interaction.

Snijder J, Burnley RJ, Wiegard A, Melquiond AS, Bonvin AM, Axmann IM, Heck AJ.

Proc Natl Acad Sci U S A. 2014 Jan 28;111(4):1379-84. doi: 10.1073/pnas.1314326111. Epub 2014 Jan 13.


Cooperative KaiA-KaiB-KaiC interactions affect KaiB/SasA competition in the circadian clock of cyanobacteria.

Tseng R, Chang YG, Bravo I, Latham R, Chaudhary A, Kuo NW, Liwang A.

J Mol Biol. 2014 Jan 23;426(2):389-402. doi: 10.1016/j.jmb.2013.09.040. Epub 2013 Oct 7.


Dephosphorylation of the core clock protein KaiC in the cyanobacterial KaiABC circadian oscillator proceeds via an ATP synthase mechanism.

Egli M, Mori T, Pattanayek R, Xu Y, Qin X, Johnson CH.

Biochemistry. 2012 Feb 28;51(8):1547-58. doi: 10.1021/bi201525n. Epub 2012 Feb 13.


Regulation of circadian clock gene expression by phosphorylation states of KaiC in cyanobacteria.

Murayama Y, Oyama T, Kondo T.

J Bacteriol. 2008 Mar;190(5):1691-8. doi: 10.1128/JB.01693-07. Epub 2007 Dec 28.


A cyanobacterial circadian clock based on the Kai oscillator.

Kondo T.

Cold Spring Harb Symp Quant Biol. 2007;72:47-55. doi: 10.1101/sqb.2007.72.029. Review.


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