Plant Transcription Factor Database
Previous version: v3.0
Eutrema salsugineum
G2-like Family
Species TF ID Description
Thhalv10000498mG2-like family protein
Thhalv10000980mG2-like family protein
Thhalv10000981mG2-like family protein
Thhalv10000982mG2-like family protein
Thhalv10001175mG2-like family protein
Thhalv10001986mG2-like family protein
Thhalv10002005mG2-like family protein
Thhalv10002605mG2-like family protein
Thhalv10002625mG2-like family protein
Thhalv10002873mG2-like family protein
Thhalv10003223mG2-like family protein
Thhalv10003256mG2-like family protein
Thhalv10004257mG2-like family protein
Thhalv10004351mG2-like family protein
Thhalv10004475mG2-like family protein
Thhalv10004791mG2-like family protein
Thhalv10007844mG2-like family protein
Thhalv10008054mG2-like family protein
Thhalv10008069mG2-like family protein
Thhalv10008115mG2-like family protein
Thhalv10008235mG2-like family protein
Thhalv10008620mG2-like family protein
Thhalv10011605mG2-like family protein
Thhalv10013675mG2-like family protein
Thhalv10013729mG2-like family protein
Thhalv10013850mG2-like family protein
Thhalv10014387mG2-like family protein
Thhalv10016733mG2-like family protein
Thhalv10016890mG2-like family protein
Thhalv10017090mG2-like family protein
Thhalv10017945mG2-like family protein
Thhalv10018737mG2-like family protein
Thhalv10018760mG2-like family protein
Thhalv10018902mG2-like family protein
Thhalv10020738mG2-like family protein
Thhalv10020739mG2-like family protein
Thhalv10020861mG2-like family protein
Thhalv10020941mG2-like family protein
Thhalv10020942mG2-like family protein
Thhalv10021133mG2-like family protein
Thhalv10021440mG2-like family protein
Thhalv10025327mG2-like family protein
Thhalv10025330mG2-like family protein
Thhalv10025593mG2-like family protein
Thhalv10025808mG2-like family protein
Thhalv10025876mG2-like family protein
Thhalv10025891mG2-like family protein
Thhalv10025898mG2-like family protein
Thhalv10026166mG2-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