PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Capsella rubella
G2-like Family
Species TF ID Description
Carubv10001064mG2-like family protein
Carubv10001104mG2-like family protein
Carubv10001129mG2-like family protein
Carubv10001148mG2-like family protein
Carubv10002022mG2-like family protein
Carubv10003097mG2-like family protein
Carubv10003130mG2-like family protein
Carubv10003217mG2-like family protein
Carubv10003825mG2-like family protein
Carubv10004940mG2-like family protein
Carubv10005261mG2-like family protein
Carubv10005268mG2-like family protein
Carubv10005375mG2-like family protein
Carubv10005378mG2-like family protein
Carubv10005390mG2-like family protein
Carubv10005605mG2-like family protein
Carubv10009328mG2-like family protein
Carubv10009492mG2-like family protein
Carubv10009677mG2-like family protein
Carubv10010057mG2-like family protein
Carubv10011925mG2-like family protein
Carubv10012777mG2-like family protein
Carubv10013614mG2-like family protein
Carubv10013697mG2-like family protein
Carubv10013698mG2-like family protein
Carubv10013706mG2-like family protein
Carubv10013867mG2-like family protein
Carubv10013932mG2-like family protein
Carubv10014114mG2-like family protein
Carubv10014134mG2-like family protein
Carubv10014180mG2-like family protein
Carubv10014213mG2-like family protein
Carubv10014526mG2-like family protein
Carubv10015062mG2-like family protein
Carubv10016382mG2-like family protein
Carubv10017308mG2-like family protein
Carubv10017538mG2-like family protein
Carubv10017553mG2-like family protein
Carubv10017603mG2-like family protein
Carubv10017606mG2-like family protein
Carubv10017769mG2-like family protein
Carubv10018983mG2-like family protein
Carubv10020551mG2-like family protein
Carubv10020552mG2-like family protein
Carubv10020610mG2-like family protein
Carubv10023302mG2-like family protein
Carubv10023575mG2-like family protein
Carubv10024503mG2-like family protein
Carubv10024859mG2-like family protein
Carubv10024931mG2-like family protein
Carubv10026528mG2-like family protein
Carubv10026895mG2-like family protein
Carubv10026920mG2-like family protein
Carubv10027834mG2-like family protein
Carubv10028086mG2-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