PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Populus euphratica
G2-like Family
Species TF ID Description
CCG000232.1G2-like family protein
CCG000317.1G2-like family protein
CCG000354.1G2-like family protein
CCG000598.1G2-like family protein
CCG000811.1G2-like family protein
CCG001403.2G2-like family protein
CCG001404.1G2-like family protein
CCG003178.1G2-like family protein
CCG004151.1G2-like family protein
CCG004771.1G2-like family protein
CCG005514.1G2-like family protein
CCG007369.1G2-like family protein
CCG007431.1G2-like family protein
CCG008891.1G2-like family protein
CCG008917.1G2-like family protein
CCG009756.1G2-like family protein
CCG009830.1G2-like family protein
CCG009847.1G2-like family protein
CCG009848.1G2-like family protein
CCG010040.1G2-like family protein
CCG010324.2G2-like family protein
CCG011772.1G2-like family protein
CCG013003.1G2-like family protein
CCG013267.1G2-like family protein
CCG013448.1G2-like family protein
CCG014372.1G2-like family protein
CCG014410.2G2-like family protein
CCG015521.1G2-like family protein
CCG015833.1G2-like family protein
CCG016401.1G2-like family protein
CCG017409.1G2-like family protein
CCG017681.1G2-like family protein
CCG017882.1G2-like family protein
CCG018169.1G2-like family protein
CCG018721.1G2-like family protein
CCG019351.1G2-like family protein
CCG019960.1G2-like family protein
CCG020422.1G2-like family protein
CCG022571.1G2-like family protein
CCG022768.1G2-like family protein
CCG023176.1G2-like family protein
CCG023946.1G2-like family protein
CCG024305.1G2-like family protein
CCG024724.1G2-like family protein
CCG024756.1G2-like family protein
CCG024834.1G2-like family protein
CCG025120.2G2-like family protein
CCG025416.1G2-like family protein
CCG025458.1G2-like family protein
CCG025980.1G2-like family protein
CCG026183.1G2-like family protein
CCG026441.1G2-like family protein
CCG026442.1G2-like family protein
CCG026726.1G2-like family protein
CCG027008.3G2-like family protein
CCG027383.2G2-like family protein
CCG027809.1G2-like family protein
CCG028390.1G2-like family protein
CCG028391.1G2-like family protein
CCG028616.2G2-like family protein
CCG028963.1G2-like family protein
CCG030062.1G2-like family protein
CCG030820.1G2-like family protein
CCG032647.1G2-like family protein
CCG032808.1G2-like family protein
CCG033012.1G2-like family protein
CCG033276.1G2-like family protein
CCG033277.1G2-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