Ontology highlight
ABSTRACT:
SUBMITTER: Tang CT
PROVIDER: S-EPMC2705601 | biostudies-literature | 2009 Jun
REPOSITORIES: biostudies-literature
Tang Chi-Tai CT Li Shaojie S Long Chengzu C Cha Joonseok J Huang Guocun G Li Lily L Chen She S Liu Yi Y
Proceedings of the National Academy of Sciences of the United States of America 20090608 26
Protein phosphorylation plays essential roles in eukaryotic circadian clocks. Like PERIOD in animals, the Neurospora core circadian protein FRQ is progressively phosphorylated and becomes extensively phosphorylated before its degradation. In this study, by using purified FRQ protein from Neurospora, we identified 43 in vivo FRQ phosphorylation sites by mass spectrometry analysis. In addition, we show that CK-1a and CKII are responsible for most FRQ phosphorylation events and identify an addition ...[more]