PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Daucus carota
G2-like Family
Species TF ID Description
DCAR_000583G2-like family protein
DCAR_001619G2-like family protein
DCAR_002497G2-like family protein
DCAR_002636G2-like family protein
DCAR_004231G2-like family protein
DCAR_004273G2-like family protein
DCAR_005865G2-like family protein
DCAR_005866G2-like family protein
DCAR_005950G2-like family protein
DCAR_006080G2-like family protein
DCAR_006227G2-like family protein
DCAR_006905G2-like family protein
DCAR_007159G2-like family protein
DCAR_008227G2-like family protein
DCAR_008587G2-like family protein
DCAR_009125G2-like family protein
DCAR_009660G2-like family protein
DCAR_010924G2-like family protein
DCAR_011833G2-like family protein
DCAR_012761G2-like family protein
DCAR_013033G2-like family protein
DCAR_013274G2-like family protein
DCAR_013521G2-like family protein
DCAR_013655G2-like family protein
DCAR_014854G2-like family protein
DCAR_015408G2-like family protein
DCAR_015531G2-like family protein
DCAR_015637G2-like family protein
DCAR_015640G2-like family protein
DCAR_015781G2-like family protein
DCAR_016851G2-like family protein
DCAR_016859G2-like family protein
DCAR_016890G2-like family protein
DCAR_017856G2-like family protein
DCAR_018514G2-like family protein
DCAR_018677G2-like family protein
DCAR_018701G2-like family protein
DCAR_018808G2-like family protein
DCAR_018923G2-like family protein
DCAR_018983G2-like family protein
DCAR_018984G2-like family protein
DCAR_019840G2-like family protein
DCAR_019886G2-like family protein
DCAR_019908G2-like family protein
DCAR_020413G2-like family protein
DCAR_020594G2-like family protein
DCAR_020944G2-like family protein
DCAR_021264G2-like family protein
DCAR_022065G2-like family protein
DCAR_023529G2-like family protein
DCAR_023678G2-like family protein
DCAR_024477G2-like family protein
DCAR_025704G2-like family protein
DCAR_025805G2-like family protein
DCAR_025809G2-like family protein
DCAR_026609G2-like family protein
DCAR_026719G2-like family protein
DCAR_027996G2-like family protein
DCAR_028852G2-like family protein
DCAR_030077G2-like family protein
DCAR_030321G2-like family protein
DCAR_030793G2-like family protein
DCAR_031015G2-like family protein
DCAR_032015G2-like family protein
DCAR_032067G2-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