PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Solanum tuberosum
G2-like Family
Species TF ID Description
PGSC0003DMP400001575G2-like family protein
PGSC0003DMP400001751G2-like family protein
PGSC0003DMP400001752G2-like family protein
PGSC0003DMP400003836G2-like family protein
PGSC0003DMP400008051G2-like family protein
PGSC0003DMP400008052G2-like family protein
PGSC0003DMP400008633G2-like family protein
PGSC0003DMP400011409G2-like family protein
PGSC0003DMP400012375G2-like family protein
PGSC0003DMP400012376G2-like family protein
PGSC0003DMP400012377G2-like family protein
PGSC0003DMP400012721G2-like family protein
PGSC0003DMP400013097G2-like family protein
PGSC0003DMP400013098G2-like family protein
PGSC0003DMP400013099G2-like family protein
PGSC0003DMP400013100G2-like family protein
PGSC0003DMP400014747G2-like family protein
PGSC0003DMP400014748G2-like family protein
PGSC0003DMP400015438G2-like family protein
PGSC0003DMP400015439G2-like family protein
PGSC0003DMP400016412G2-like family protein
PGSC0003DMP400016413G2-like family protein
PGSC0003DMP400016414G2-like family protein
PGSC0003DMP400016415G2-like family protein
PGSC0003DMP400016574G2-like family protein
PGSC0003DMP400017058G2-like family protein
PGSC0003DMP400017059G2-like family protein
PGSC0003DMP400017819G2-like family protein
PGSC0003DMP400018035G2-like family protein
PGSC0003DMP400018036G2-like family protein
PGSC0003DMP400020260G2-like family protein
PGSC0003DMP400020261G2-like family protein
PGSC0003DMP400020716G2-like family protein
PGSC0003DMP400021207G2-like family protein
PGSC0003DMP400021208G2-like family protein
PGSC0003DMP400021209G2-like family protein
PGSC0003DMP400023570G2-like family protein
PGSC0003DMP400026055G2-like family protein
PGSC0003DMP400026056G2-like family protein
PGSC0003DMP400027849G2-like family protein
PGSC0003DMP400028765G2-like family protein
PGSC0003DMP400028813G2-like family protein
PGSC0003DMP400029299G2-like family protein
PGSC0003DMP400032100G2-like family protein
PGSC0003DMP400032101G2-like family protein
PGSC0003DMP400032183G2-like family protein
PGSC0003DMP400032184G2-like family protein
PGSC0003DMP400035529G2-like family protein
PGSC0003DMP400035530G2-like family protein
PGSC0003DMP400035531G2-like family protein
PGSC0003DMP400037860G2-like family protein
PGSC0003DMP400037861G2-like family protein
PGSC0003DMP400039985G2-like family protein
PGSC0003DMP400040605G2-like family protein
PGSC0003DMP400040606G2-like family protein
PGSC0003DMP400040746G2-like family protein
PGSC0003DMP400040954G2-like family protein
PGSC0003DMP400044725G2-like family protein
PGSC0003DMP400044726G2-like family protein
PGSC0003DMP400046284G2-like family protein
PGSC0003DMP400047318G2-like family protein
PGSC0003DMP400048818G2-like family protein
PGSC0003DMP400048927G2-like family protein
PGSC0003DMP400048930G2-like family protein
PGSC0003DMP400048931G2-like family protein
PGSC0003DMP400048932G2-like family protein
PGSC0003DMP400048933G2-like family protein
PGSC0003DMP400048934G2-like family protein
PGSC0003DMP400050229G2-like family protein
PGSC0003DMP400051255G2-like family protein
PGSC0003DMP400051256G2-like family protein
PGSC0003DMP400052314G2-like family protein
PGSC0003DMP400052315G2-like family protein
PGSC0003DMP400052785G2-like family protein
PGSC0003DMP400052786G2-like family protein
PGSC0003DMP400054532G2-like family protein
PGSC0003DMP400056813G2-like family protein
PGSC0003DMP400057536G2-like family protein
PGSC0003DMP400060033G2-like family protein
PGSC0003DMP400060683G2-like family protein
PGSC0003DMP400066080G2-like family protein
PGSC0003DMP400066385G2-like family protein
PGSC0003DMP400067945G2-like family protein
PGSC0003DMP400068353G2-like family protein
PGSC0003DMP400068969G2-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