Plant Transcription Factor Database
Previous version: v3.0
Arabis alpina
G2-like Family
Species TF ID Description
KFK23376.1G2-like family protein
KFK25068.1G2-like family protein
KFK25874.1G2-like family protein
KFK26110.1G2-like family protein
KFK27483.1G2-like family protein
KFK30344.1G2-like family protein
KFK31552.1G2-like family protein
KFK31659.1G2-like family protein
KFK32913.1G2-like family protein
KFK33423.1G2-like family protein
KFK33518.1G2-like family protein
KFK33519.1G2-like family protein
KFK33997.1G2-like family protein
KFK35065.1G2-like family protein
KFK35079.1G2-like family protein
KFK35545.1G2-like family protein
KFK35637.1G2-like family protein
KFK36001.1G2-like family protein
KFK36037.1G2-like family protein
KFK36245.1G2-like family protein
KFK36253.1G2-like family protein
KFK36254.1G2-like family protein
KFK36916.1G2-like family protein
KFK37114.1G2-like family protein
KFK38619.1G2-like family protein
KFK38620.1G2-like family protein
KFK39710.1G2-like family protein
KFK39711.1G2-like family protein
KFK40431.1G2-like family protein
KFK41291.1G2-like family protein
KFK41381.1G2-like family protein
KFK41382.1G2-like family protein
KFK42319.1G2-like family protein
KFK42348.1G2-like family protein
KFK43702.1G2-like family protein
KFK43703.1G2-like family protein
KFK44548.1G2-like family protein
KFK45020.1G2-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