Plant Transcription Factor Database
Previous version: v3.0
Oryza glaberrima
G2-like Family
Species TF ID Description
ORGLA01G0045900.1G2-like family protein
ORGLA01G0079000.1G2-like family protein
ORGLA01G0309000.1G2-like family protein
ORGLA01G0392100.1G2-like family protein
ORGLA01G0397800.1G2-like family protein
ORGLA01G0412400.1G2-like family protein
ORGLA02G0030200.1G2-like family protein
ORGLA02G0047700.1G2-like family protein
ORGLA02G0051300.1G2-like family protein
ORGLA02G0091700.1G2-like family protein
ORGLA02G0127400.1G2-like family protein
ORGLA02G0236600.1G2-like family protein
ORGLA02G0249400.1G2-like family protein
ORGLA03G0021400.1G2-like family protein
ORGLA03G0151400.1G2-like family protein
ORGLA03G0154000.1G2-like family protein
ORGLA03G0258500.1G2-like family protein
ORGLA03G0322500.1G2-like family protein
ORGLA03G0324100.1G2-like family protein
ORGLA04G0189700.1G2-like family protein
ORGLA04G0205700.1G2-like family protein
ORGLA04G0249600.1G2-like family protein
ORGLA05G0141400.1G2-like family protein
ORGLA05G0183900.1G2-like family protein
ORGLA06G0126200.1G2-like family protein
ORGLA06G0148100.1G2-like family protein
ORGLA06G0171400.1G2-like family protein
ORGLA06G0200700.1G2-like family protein
ORGLA06G0204400.1G2-like family protein
ORGLA06G0222600.1G2-like family protein
ORGLA07G0012100.1G2-like family protein
ORGLA07G0105500.1G2-like family protein
ORGLA07G0211200.1G2-like family protein
ORGLA08G0030700.1G2-like family protein
ORGLA08G0104500.1G2-like family protein
ORGLA08G0104600.1G2-like family protein
ORGLA08G0133500.1G2-like family protein
ORGLA08G0138500.1G2-like family protein
ORGLA09G0034800.1G2-like family protein
ORGLA09G0034900.1G2-like family protein
ORGLA09G0068300.1G2-like family protein
ORGLA10G0110500.1G2-like family protein
ORGLA10G0122800.1G2-like family protein
ORGLA10G0167800.1G2-like family protein
ORGLA11G0005200.1G2-like family protein
ORGLA12G0000900.1G2-like family protein
ORGLA12G0148200.1G2-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