PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Previous version: v3.0 v4.0
Rubus occidentalis
G2-like Family
Species TF ID Description
Ro01_G05088G2-like family protein
Ro01_G07634G2-like family protein
Ro01_G19809G2-like family protein
Ro01_G23557G2-like family protein
Ro01_G26399G2-like family protein
Ro02_G02435G2-like family protein
Ro02_G13736G2-like family protein
Ro02_G15252G2-like family protein
Ro03_G05259G2-like family protein
Ro03_G05736G2-like family protein
Ro03_G13483G2-like family protein
Ro03_G17042G2-like family protein
Ro03_G18133G2-like family protein
Ro03_G20492G2-like family protein
Ro03_G24413G2-like family protein
Ro04_G00057G2-like family protein
Ro04_G00448G2-like family protein
Ro04_G02640G2-like family protein
Ro04_G26848G2-like family protein
Ro05_G03654G2-like family protein
Ro05_G13822G2-like family protein
Ro05_G24926G2-like family protein
Ro06_G04886G2-like family protein
Ro06_G05624G2-like family protein
Ro06_G11331G2-like family protein
Ro06_G12778G2-like family protein
Ro06_G13045G2-like family protein
Ro06_G14388G2-like family protein
Ro06_G15699G2-like family protein
Ro06_G26515G2-like family protein
Ro06_G27545G2-like family protein
Ro06_G28552G2-like family protein
Ro07_G04773G2-like family protein
Ro07_G13242G2-like family protein
Ro07_G13245G2-like family protein
Ro07_G18769G2-like family protein
Ro07_G18770G2-like family protein
Ro07_G18772G2-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