PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Dianthus caryophyllus
G2-like Family
Species TF ID Description
Dca12622.1G2-like family protein
Dca12836.1G2-like family protein
Dca13203.1G2-like family protein
Dca13480.1G2-like family protein
Dca13546.1G2-like family protein
Dca14520.1G2-like family protein
Dca17019.1G2-like family protein
Dca17782.1G2-like family protein
Dca18828.1G2-like family protein
Dca18912.1G2-like family protein
Dca21386.1G2-like family protein
Dca22548.1G2-like family protein
Dca22636.1G2-like family protein
Dca24040.1G2-like family protein
Dca25592.1G2-like family protein
Dca25726.1G2-like family protein
Dca28114.1G2-like family protein
Dca29105.1G2-like family protein
Dca29702.1G2-like family protein
Dca30161.1G2-like family protein
Dca30161.2G2-like family protein
Dca32147.1G2-like family protein
Dca32427.1G2-like family protein
Dca32558.1G2-like family protein
Dca32697.1G2-like family protein
Dca34823.1G2-like family protein
Dca35701.1G2-like family protein
Dca36007.1G2-like family protein
Dca39248.1G2-like family protein
Dca42700.1G2-like family protein
Dca46780.1G2-like family protein
Dca54024.1G2-like family protein
Dca54682.1G2-like family protein
Dca57219.1G2-like family protein
Dca58130.1G2-like family protein
Dca60054.1G2-like family protein
Dca60722.1G2-like family protein
Dca6195.1G2-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