PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Previous version: v3.0 v4.0
Cannabis sativa
G2-like Family
Species TF ID Description
PK00827.1G2-like family protein
PK01035.1G2-like family protein
PK01305.1G2-like family protein
PK01823.1G2-like family protein
PK01823.3G2-like family protein
PK02601.2G2-like family protein
PK02936.1G2-like family protein
PK02936.2G2-like family protein
PK03633.1G2-like family protein
PK04145.1G2-like family protein
PK05290.1G2-like family protein
PK05732.1G2-like family protein
PK09499.1G2-like family protein
PK10342.1G2-like family protein
PK14402.1G2-like family protein
PK14629.1G2-like family protein
PK14629.2G2-like family protein
PK15677.1G2-like family protein
PK16227.1G2-like family protein
PK19727.1G2-like family protein
PK19779.1G2-like family protein
PK20264.1G2-like family protein
PK20621.1G2-like family protein
PK23608.1G2-like family protein
PK23854.1G2-like family protein
PK23977.1G2-like family protein
PK24920.1G2-like family protein
PK25809.1G2-like family protein
PK26523.1G2-like family protein
PK26966.1G2-like family protein
PK27491.1G2-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