PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Eucalyptus camaldulensis
G2-like Family
Species TF ID Description
EcC001127.10G2-like family protein
EcC003298.20G2-like family protein
EcC005064.40G2-like family protein
EcC007507.10G2-like family protein
EcC011260.10G2-like family protein
EcC012843.70G2-like family protein
EcC013137.10G2-like family protein
EcC014751.10G2-like family protein
EcC015474.40G2-like family protein
EcC015949.10G2-like family protein
EcC019116.10G2-like family protein
EcC020669.10G2-like family protein
EcC023257.10G2-like family protein
EcC024166.20G2-like family protein
EcC026591.10G2-like family protein
EcC026665.10G2-like family protein
EcC027036.30G2-like family protein
EcC032060.30G2-like family protein
EcC035068.20G2-like family protein
EcC036920.10G2-like family protein
EcC037933.50G2-like family protein
EcC038117.10G2-like family protein
EcC038389.10G2-like family protein
EcC043315.10G2-like family protein
EcC045129.10G2-like family protein
EcC047873.10G2-like family protein
EcC049096.50G2-like family protein
EcC052828.20G2-like family protein
EcC054060.50G2-like family protein
EcC054488.40G2-like family protein
EcC054488.50G2-like family protein
EcC054619.50G2-like family protein
EcC054799.70G2-like family protein
EcC054831.10G2-like family protein
EcC054893.20G2-like family protein
EcC054953.30G2-like family protein
EcC055035.40G2-like family protein
EcC071705.10G2-like family protein
EcS504134.10G2-like family protein
EcS553919.10G2-like family protein
EcS578350.10G2-like family protein
EcS588623.10G2-like family protein
EcS636834.10G2-like family protein
EcS673217.10G2-like family protein
EcS738175.10G2-like family protein
EcS746304.10G2-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