Detailed gene information

Genes [306]




ZTL
ZEITLUPE
TAIR: AT5G57360
UNIPROT: Q94BT6
NOWOMICS: View List

Publications

Somers D E et al., 2000, Cell
Más P et al., 2003, Nature
Kim W et al., 2003, Proc. Natl. Acad. Sci. U.S.A.
Somers D E et al., 2004, Plant Cell
Kim W et al., 2005, Plant Physiol.
Kim W et al., 2007, Nature
Kiba T et al., 2007, Plant Cell
Fujiwara S et al., 2008, J. Biol. Chem.
Baudry A et al., 2010, Plant Cell
Kim J et al., 2013, Development
Liu H et al., 2013, Proc. Natl. Acad. Sci. U.S.A.

Appears in the following schemes

Circadian clock overview
Photoperiod pathway

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]



ZTL interaction network

Downstream and upstream flowering-related genes

Physical interactions with other flowering-related proteins