PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Actinidia chinensis
G2-like Family
Species TF ID Description
Achn001931G2-like family protein
Achn004071G2-like family protein
Achn006131G2-like family protein
Achn013371G2-like family protein
Achn014781G2-like family protein
Achn032371G2-like family protein
Achn036321G2-like family protein
Achn063851G2-like family protein
Achn064071G2-like family protein
Achn076941G2-like family protein
Achn084161G2-like family protein
Achn091111G2-like family protein
Achn091981G2-like family protein
Achn091991G2-like family protein
Achn093421G2-like family protein
Achn096691G2-like family protein
Achn098161G2-like family protein
Achn110491G2-like family protein
Achn126761G2-like family protein
Achn127811G2-like family protein
Achn129041G2-like family protein
Achn139181G2-like family protein
Achn141671G2-like family protein
Achn149891G2-like family protein
Achn152431G2-like family protein
Achn154701G2-like family protein
Achn156881G2-like family protein
Achn170471G2-like family protein
Achn172721G2-like family protein
Achn173961G2-like family protein
Achn176591G2-like family protein
Achn178041G2-like family protein
Achn185121G2-like family protein
Achn190471G2-like family protein
Achn191681G2-like family protein
Achn210101G2-like family protein
Achn210241G2-like family protein
Achn214321G2-like family protein
Achn216821G2-like family protein
Achn218351G2-like family protein
Achn233451G2-like family protein
Achn243421G2-like family protein
Achn243861G2-like family protein
Achn249191G2-like family protein
Achn251771G2-like family protein
Achn253821G2-like family protein
Achn270781G2-like family protein
Achn280481G2-like family protein
Achn300761G2-like family protein
Achn312101G2-like family protein
Achn323021G2-like family protein
Achn337851G2-like family protein
Achn341381G2-like family protein
Achn344551G2-like family protein
Achn352661G2-like family protein
Achn353161G2-like family protein
Achn367381G2-like family protein
Achn369371G2-like family protein
Achn372661G2-like family protein
Achn379861G2-like family protein
Achn384131G2-like family protein
G2-like Family Introduction

The GLK proteins are members of the recently categorized GARP superfamily of transcription factors (Riechmann et al., 2000) defined by G2 in maize; the Arabidopsis RESPONSE REGULATOR-B (ARR-B) proteins (Imamura et al., 1999); and the PHOSPHATE STARVATION RESPONSE1 (PSR1) protein of Chlamydomonas (Wykoff et al., 1999). In the case of G2, three of the four defining features of most transcription factors have been verified experimentally in heterologous systems. G2 is nuclearlocalized (Hall et al., 1998), is able to transactivate reporter gene expression, and can both homo-dimerize and heterodimerize with ZmGLK1 (Rossini et al., 2001). DNA-binding activity of GLK proteins has yet to be demonstrated,however, the putative DNA-binding domain is highly conserved with domains in other GARP proteins such as ARR1 and ARR2 (Riechmann et al., 2000). Notably, ARR1 and ARR2 have been shown to bind DNA (Sakai et al.,2000), thus it is likely that GLK proteins act as transcriptional regulators of chloroplast development.

The GLK proteins are members of the GARP superfamily of transcription factors, and phylogenetic analysis demonstrates that the maize, rice and Arabidopsis GLK gene pairs comprise a distinct group within the GARP superfamily. Further phylogenetic analysis suggests that the gene pairs arose through separate duplication events in the monocot and dicot lineages. As in rice, AtGLK1 and AtGLK2 are expressed in partially overlapping domains in photosynthetic tissue. GLK genes therefore regulate chloroplast development in diverse plant species.

Fitter DW, Martin DJ, Copley MJ, Scotland RW, Langdale JA.
GLK gene pairs regulate chloroplast development in diverse plant species.
Plant J. 2002 Sep;31(6):713-27.
PMID: 12220263