Plant Transcription Factor Database
Previous version: v3.0
Zostera marina
G2-like Family
Species TF ID Description
Zosma101g00780.1G2-like family protein
Zosma103g00680.1G2-like family protein
Zosma10g00600.1G2-like family protein
Zosma112g00420.1G2-like family protein
Zosma117g00480.1G2-like family protein
Zosma123g00270.1G2-like family protein
Zosma133g00270.1G2-like family protein
Zosma13g00280.1G2-like family protein
Zosma148g00340.1G2-like family protein
Zosma159g00100.1G2-like family protein
Zosma16g00920.1G2-like family protein
Zosma175g00180.1G2-like family protein
Zosma178g00480.1G2-like family protein
Zosma18g01190.1G2-like family protein
Zosma19g00150.1G2-like family protein
Zosma1g03400.1G2-like family protein
Zosma1g03450.1G2-like family protein
Zosma208g00340.1G2-like family protein
Zosma20g00940.1G2-like family protein
Zosma21g00640.1G2-like family protein
Zosma25g00430.1G2-like family protein
Zosma262g00120.1G2-like family protein
Zosma265g00260.1G2-like family protein
Zosma289g00260.1G2-like family protein
Zosma28g00770.1G2-like family protein
Zosma296g00010.1G2-like family protein
Zosma29g01520.1G2-like family protein
Zosma305g00050.1G2-like family protein
Zosma30g00060.1G2-like family protein
Zosma320g00060.1G2-like family protein
Zosma323g00050.1G2-like family protein
Zosma33g00510.1G2-like family protein
Zosma38g00200.1G2-like family protein
Zosma44g00560.1G2-like family protein
Zosma49g00640.1G2-like family protein
Zosma50g00270.1G2-like family protein
Zosma58g00470.1G2-like family protein
Zosma6g00200.1G2-like family protein
Zosma70g00660.1G2-like family protein
Zosma77g00400.1G2-like family protein
Zosma88g00080.1G2-like family protein
Zosma9g01070.1G2-like family protein
Zosma9g01150.1G2-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