PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Eragrostis tef
G2-like Family
Species TF ID Description
462845860G2-like family protein
462845874G2-like family protein
462845876G2-like family protein
462852665G2-like family protein
462857477G2-like family protein
462860332G2-like family protein
462863201G2-like family protein
462873016G2-like family protein
462874925G2-like family protein
462875559G2-like family protein
462875775G2-like family protein
462876138G2-like family protein
462878998G2-like family protein
462879467G2-like family protein
462879545G2-like family protein
462882426G2-like family protein
462888394G2-like family protein
462888938G2-like family protein
462889249G2-like family protein
462893214G2-like family protein
462893686G2-like family protein
462895115G2-like family protein
462899814G2-like family protein
462905609G2-like family protein
462906072G2-like family protein
462906164G2-like family protein
462906199G2-like family protein
462906985G2-like family protein
462909130G2-like family protein
462909284G2-like family protein
462911439G2-like family protein
462913990G2-like family protein
462916489G2-like family protein
462919173G2-like family protein
462932360G2-like family protein
462932362G2-like family protein
462936464G2-like family protein
462938199G2-like family protein
462940991G2-like family protein
462941485G2-like family protein
462944543G2-like family protein
462945705G2-like family protein
462946023G2-like family protein
462946026G2-like family protein
462951772G2-like family protein
462951778G2-like family protein
462953981G2-like family protein
462953993G2-like family protein
462954062G2-like family protein
462954349G2-like family protein
462963194G2-like family protein
462964415G2-like family protein
462964512G2-like family protein
462968049G2-like family protein
462969747G2-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