Protein function
Encodes a clock related subunit of the E3 ubiquitin ligase complex.
Phenotype
Overexpressor: ZTL overexpressor is late flowering. ( No data available about the photoperiodic conditions used in this study.)
[Nelson et al., 2000] Single mutant: ztl single mutant is early flowering under SD conditions only. (
ztl single mutant is early flowering in term of rosette leaf number but not in term of days to bolting. )
[Takase et al., 2011][Somers et al., 2004] Remarks: ZTL is stabilized by GIGANTEA in a blue light-dependent manner. ZTL also controls the stability of GIGANTEA nucleocytoplasmic partitioning.
[Kim et al., 2007][Kim et al., 2013] Function:Component of an E3 ubiquitin ligase complex that plays a central role in blue light-dependent circadian cycles. Acts as a blue light photoreceptor, due to the presence of FMN, that mediates light-regulated protein degradation of critical clock components by targeting them to the proteasome complex. The SCF(ADO1) E3 ubiquitin ligase complex is involved in the regulation of circadian clock-dependent processes including the transition to flowering time, hypocotyl elongation, cotyledons and leaf movement rhythms. APRR1/TOC1 and APRR5, but not GIGANTEA , are proteolytic substrates of this ubiquitin ligase complex. Blue light enhances cooperative stabilization of GIGANTEA and ADO1/ZTL, leading to amplification and sharpening of the expression profile of APRR1/TOC1. ADO1/ZTL interacts with ADO3, preventing the interaction of ADO3 with CDF1.
[Data from UniProt]
Regulators, targets and interactors
Downstream actors
causality CO --
[Fornara et al., 2009][Song et al., 2014] --
[View TAIR record]PRR5 --
[Kiba et al., 2007] --
[View TAIR record]TOC1 --
[Más et al., 2003][Baudry et al., 2010] --
[View TAIR record] Upstream actors
causality GI --
[Fornara et al., 2009][Kim et al., 2007][Kim et al., 2013] --
[View TAIR record]PRR3 --
[Fujiwara et al., 2008][Para et al., 2007] --
[View TAIR record] Protein-protein interactions
GI --
[Kim et al., 2007] --
[View TAIR record]TOE1, RAP2.7 --
[Zhang et al., 2015] --
[View TAIR record]CO --
[Fornara et al., 2009][Song et al., 2014] --
[View TAIR record] GI --
[Fornara et al., 2009][Kim et al., 2007][Kim et al., 2013] --
[View TAIR record]