PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Solanum pennellii
G2-like Family
Species TF ID Description
Sopen01g037580.1G2-like family protein
Sopen01g050520.1G2-like family protein
Sopen02g021600.1G2-like family protein
Sopen02g025400.1G2-like family protein
Sopen02g025410.1G2-like family protein
Sopen02g025420.1G2-like family protein
Sopen02g025440.1G2-like family protein
Sopen02g025550.2G2-like family protein
Sopen02g035100.1G2-like family protein
Sopen03g002160.1G2-like family protein
Sopen03g023090.1G2-like family protein
Sopen04g003630.1G2-like family protein
Sopen04g007370.1G2-like family protein
Sopen04g007370.2G2-like family protein
Sopen04g020720.1G2-like family protein
Sopen04g033180.1G2-like family protein
Sopen05g003740.1G2-like family protein
Sopen05g005540.1G2-like family protein
Sopen05g029510.1G2-like family protein
Sopen05g034340.1G2-like family protein
Sopen06g001660.1G2-like family protein
Sopen06g003060.1G2-like family protein
Sopen06g003060.2G2-like family protein
Sopen06g016880.1G2-like family protein
Sopen06g021670.1G2-like family protein
Sopen06g021670.2G2-like family protein
Sopen06g024660.1G2-like family protein
Sopen06g032760.1G2-like family protein
Sopen07g023530.1G2-like family protein
Sopen07g025040.1G2-like family protein
Sopen07g027580.1G2-like family protein
Sopen08g001280.1G2-like family protein
Sopen08g001280.2G2-like family protein
Sopen08g024650.1G2-like family protein
Sopen08g024650.2G2-like family protein
Sopen08g024980.1G2-like family protein
Sopen09g001040.1G2-like family protein
Sopen09g001330.1G2-like family protein
Sopen09g028620.2G2-like family protein
Sopen09g028620.3G2-like family protein
Sopen09g028620.4G2-like family protein
Sopen09g034770.1G2-like family protein
Sopen10g004030.1G2-like family protein
Sopen10g028120.1G2-like family protein
Sopen10g028970.1G2-like family protein
Sopen10g029340.1G2-like family protein
Sopen10g031000.1G2-like family protein
Sopen10g031470.1G2-like family protein
Sopen10g032830.1G2-like family protein
Sopen10g032830.2G2-like family protein
Sopen10g032830.3G2-like family protein
Sopen10g035030.1G2-like family protein
Sopen10g035030.2G2-like family protein
Sopen11g006610.1G2-like family protein
Sopen11g010100.1G2-like family protein
Sopen11g010130.1G2-like family protein
Sopen11g011510.1G2-like family protein
Sopen11g025950.1G2-like family protein
Sopen11g026970.1G2-like family protein
Sopen12g002230.1G2-like family protein
Sopen12g002760.1G2-like family protein
Sopen12g006590.1G2-like family protein
Sopen12g008150.1G2-like family protein
Sopen12g008150.2G2-like family protein
Sopen12g033150.1G2-like family protein
Sopen12g033150.2G2-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