PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Utricularia gibba
G2-like Family
Species TF ID Description
678311607G2-like family protein
678315443G2-like family protein
678317422G2-like family protein
678318612G2-like family protein
678321246G2-like family protein
678321387G2-like family protein
678327049G2-like family protein
678339240G2-like family protein
678340574G2-like family protein
678347887G2-like family protein
678354354G2-like family protein
678357610G2-like family protein
678360604G2-like family protein
678362024G2-like family protein
678364718G2-like family protein
678365027G2-like family protein
678370821G2-like family protein
678371213G2-like family protein
678372708G2-like family protein
678373718G2-like family protein
678375212G2-like family protein
678377521G2-like family protein
678377576G2-like family protein
678384257G2-like family protein
678387022G2-like family protein
678391280G2-like family protein
678391562G2-like family protein
678394935G2-like family protein
678402926G2-like family protein
678405847G2-like family protein
678410706G2-like family protein
678415418G2-like family protein
678420640G2-like family protein
678421780G2-like family protein
678432176G2-like family protein
678440799G2-like family protein
678441767G2-like family protein
678442371G2-like family protein
678445349G2-like family protein
678445352G2-like family protein
678447786G2-like family protein
678449286G2-like family protein
678449939G2-like family protein
678450216G2-like family protein
678452142G2-like family protein
678452382G2-like family protein
678453606G2-like family protein
678453798G2-like family protein
678455432G2-like family protein
678456193G2-like family protein
678458974G2-like family protein
678459868G2-like family protein
678460553G2-like family protein
678460575G2-like family protein
678461225G2-like family protein
678461745G2-like family protein
678463644G2-like family protein
678464331G2-like family protein
678465078G2-like family protein
678465462G2-like family protein
678466662G2-like family protein
678467472G2-like family protein
678468924G2-like family protein
678470160G2-like family protein
678470291G2-like family protein
678473756G2-like family protein
678473760G2-like family protein
678474242G2-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