Systematic Identification of Rhythmic Genes Reveals camk1gb as a New Element in the Circadian Clockwork

Adi Tovin, Shahar Alon, Zohar Ben-Moshe, Philipp Mracek, Gad Vatine, Nicholas S. Foulkes, Jasmine Jacob-Hirsch, Gideon Rechavi, Reiko Toyama, Steven L. Coon, David C. Klein, Eli Eisenberg, Yoav Gothilf

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A wide variety of biochemical, physiological, and molecular processes are known to have daily rhythms driven by an endogenous circadian clock. While extensive research has greatly improved our understanding of the molecular mechanisms that constitute the circadian clock, the links between this clock and dependent processes have remained elusive. To address this gap in our knowledge, we have used RNA sequencing (RNA-seq) and DNA microarrays to systematically identify clock-controlled genes in the zebrafish pineal gland. In addition to a comprehensive view of the expression pattern of known clock components within this master clock tissue, this approach has revealed novel potential elements of the circadian timing system. We have implicated one rhythmically expressed gene, camk1gb, in connecting the clock with downstream physiology of the pineal gland. Remarkably, knockdown of camk1gb disrupts locomotor activity in the whole larva, even though it is predominantly expressed within the pineal gland. Therefore, it appears that camk1gb plays a role in linking the pineal master clock with the periphery.

Original languageEnglish
Article numbere1003116
JournalPLoS Genetics
Volume8
Issue number12
DOIs
StatePublished - 1 Dec 2012
Externally publishedYes

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