PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Malus domestica
G2-like Family
Species TF ID Description
MDP0000121180G2-like family protein
MDP0000124053G2-like family protein
MDP0000124687G2-like family protein
MDP0000128135G2-like family protein
MDP0000132340G2-like family protein
MDP0000133017G2-like family protein
MDP0000142146G2-like family protein
MDP0000145790G2-like family protein
MDP0000151190G2-like family protein
MDP0000158654G2-like family protein
MDP0000159434G2-like family protein
MDP0000164300G2-like family protein
MDP0000167868G2-like family protein
MDP0000169910G2-like family protein
MDP0000179288G2-like family protein
MDP0000179986G2-like family protein
MDP0000182154G2-like family protein
MDP0000184307G2-like family protein
MDP0000187636G2-like family protein
MDP0000187812G2-like family protein
MDP0000192297G2-like family protein
MDP0000196504G2-like family protein
MDP0000197814G2-like family protein
MDP0000200243G2-like family protein
MDP0000202657G2-like family protein
MDP0000204785G2-like family protein
MDP0000214282G2-like family protein
MDP0000217637G2-like family protein
MDP0000221436G2-like family protein
MDP0000222377G2-like family protein
MDP0000225179G2-like family protein
MDP0000229587G2-like family protein
MDP0000231315G2-like family protein
MDP0000232923G2-like family protein
MDP0000234120G2-like family protein
MDP0000241055G2-like family protein
MDP0000244794G2-like family protein
MDP0000248355G2-like family protein
MDP0000248927G2-like family protein
MDP0000253656G2-like family protein
MDP0000253782G2-like family protein
MDP0000262747G2-like family protein
MDP0000263292G2-like family protein
MDP0000265555G2-like family protein
MDP0000266040G2-like family protein
MDP0000269857G2-like family protein
MDP0000272003G2-like family protein
MDP0000274727G2-like family protein
MDP0000280005G2-like family protein
MDP0000284686G2-like family protein
MDP0000285150G2-like family protein
MDP0000288143G2-like family protein
MDP0000290477G2-like family protein
MDP0000303924G2-like family protein
MDP0000312944G2-like family protein
MDP0000314088G2-like family protein
MDP0000320628G2-like family protein
MDP0000321302G2-like family protein
MDP0000321461G2-like family protein
MDP0000323119G2-like family protein
MDP0000323121G2-like family protein
MDP0000333691G2-like family protein
MDP0000450214G2-like family protein
MDP0000504079G2-like family protein
MDP0000526864G2-like family protein
MDP0000609912G2-like family protein
MDP0000617021G2-like family protein
MDP0000669078G2-like family protein
MDP0000672486G2-like family protein
MDP0000703817G2-like family protein
MDP0000773970G2-like family protein
MDP0000809773G2-like family protein
MDP0000826899G2-like family protein
MDP0000846313G2-like family protein
MDP0000869720G2-like family protein
MDP0000874064G2-like family protein
MDP0000920870G2-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