PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Thellungiella parvula
G2-like Family
Species TF ID Description
Tp1g11810G2-like family protein
Tp1g12950G2-like family protein
Tp1g22000G2-like family protein
Tp1g22660G2-like family protein
Tp1g27920G2-like family protein
Tp1g36430G2-like family protein
Tp1g41580G2-like family protein
Tp2g07010G2-like family protein
Tp2g09010G2-like family protein
Tp2g10470G2-like family protein
Tp2g12530G2-like family protein
Tp2g13470G2-like family protein
Tp2g14400G2-like family protein
Tp2g15030G2-like family protein
Tp2g19620G2-like family protein
Tp2g19980G2-like family protein
Tp2g25290G2-like family protein
Tp3g03010G2-like family protein
Tp3g03300G2-like family protein
Tp3g09090G2-like family protein
Tp3g10890G2-like family protein
Tp3g11190G2-like family protein
Tp3g21820G2-like family protein
Tp3g23070G2-like family protein
Tp3g33790G2-like family protein
Tp4g20580G2-like family protein
Tp4g22590G2-like family protein
Tp4g23290G2-like family protein
Tp4g24800G2-like family protein
Tp5g15040G2-like family protein
Tp5g23770G2-like family protein
Tp5g24700G2-like family protein
Tp5g34480G2-like family protein
Tp6g04330G2-like family protein
Tp6g04340G2-like family protein
Tp6g21270G2-like family protein
Tp6g26080G2-like family protein
Tp6g27600G2-like family protein
Tp6g36050G2-like family protein
Tp6g36060G2-like family protein
Tp6g37740G2-like family protein
Tp7g11350G2-like family protein
Tp7g16440G2-like family protein
Tp7g26590G2-like family protein
Tp7g34610G2-like family protein
Tp_un0026_006G2-like family protein
Tp_un0046_003G2-like family protein
Tp_un0442_001G2-like family protein
Tp_un1082_001G2-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