PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Ananas comosus
G2-like Family
Species TF ID Description
Aco000309.1G2-like family protein
Aco000386.1G2-like family protein
Aco001017.1G2-like family protein
Aco001094.1G2-like family protein
Aco001685.1G2-like family protein
Aco002890.1G2-like family protein
Aco004924.1G2-like family protein
Aco004939.1G2-like family protein
Aco005167.1G2-like family protein
Aco006616.1G2-like family protein
Aco007067.1G2-like family protein
Aco007475.1G2-like family protein
Aco008334.1G2-like family protein
Aco008374.1G2-like family protein
Aco008375.1G2-like family protein
Aco008558.1G2-like family protein
Aco009781.1G2-like family protein
Aco010145.1G2-like family protein
Aco011622.1G2-like family protein
Aco011928.1G2-like family protein
Aco012613.1G2-like family protein
Aco012913.1G2-like family protein
Aco013194.1G2-like family protein
Aco013405.1G2-like family protein
Aco014587.1G2-like family protein
Aco014970.1G2-like family protein
Aco015674.1G2-like family protein
Aco015964.1G2-like family protein
Aco016830.1G2-like family protein
Aco016908.1G2-like family protein
Aco017021.1G2-like family protein
Aco017080.1G2-like family protein
Aco017082.1G2-like family protein
Aco017301.1G2-like family protein
Aco018877.1G2-like family protein
Aco019267.1G2-like family protein
Aco023131.1G2-like family protein
Aco031310.1G2-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