Plant Transcription Factor Database
Previous version: v3.0
Ipomoea trifida
G2-like Family
Species TF ID Description
Itr_sc000005.1_g00047.1G2-like family protein
Itr_sc000011.1_g00055.1G2-like family protein
Itr_sc000017.1_g00040.1G2-like family protein
Itr_sc000017.1_g00042.1G2-like family protein
Itr_sc000017.1_g00043.1G2-like family protein
Itr_sc000019.1_g00038.1G2-like family protein
Itr_sc000019.1_g00039.1G2-like family protein
Itr_sc000060.1_g00030.1G2-like family protein
Itr_sc000063.1_g00002.1G2-like family protein
Itr_sc000065.1_g00028.1G2-like family protein
Itr_sc000092.1_g00018.1G2-like family protein
Itr_sc000100.1_g00027.1G2-like family protein
Itr_sc000140.1_g00014.1G2-like family protein
Itr_sc000146.1_g00001.1G2-like family protein
Itr_sc000146.1_g00002.1G2-like family protein
Itr_sc000214.1_g00008.1G2-like family protein
Itr_sc000229.1_g00016.1G2-like family protein
Itr_sc000246.1_g00031.1G2-like family protein
Itr_sc000253.1_g00008.1G2-like family protein
Itr_sc000261.1_g00001.1G2-like family protein
Itr_sc000269.1_g00003.1G2-like family protein
Itr_sc000283.1_g00012.1G2-like family protein
Itr_sc000352.1_g00026.1G2-like family protein
Itr_sc000363.1_g00016.1G2-like family protein
Itr_sc000390.1_g00007.1G2-like family protein
Itr_sc000452.1_g00004.1G2-like family protein
Itr_sc000459.1_g00007.1G2-like family protein
Itr_sc000470.1_g00012.1G2-like family protein
Itr_sc000471.1_g00002.1G2-like family protein
Itr_sc000495.1_g00002.1G2-like family protein
Itr_sc000518.1_g00010.1G2-like family protein
Itr_sc000529.1_g00001.1G2-like family protein
Itr_sc000535.1_g00031.1G2-like family protein
Itr_sc000565.1_g00005.1G2-like family protein
Itr_sc000567.1_g00032.1G2-like family protein
Itr_sc000570.1_g00003.1G2-like family protein
Itr_sc000579.1_g00012.1G2-like family protein
Itr_sc000654.1_g00006.1G2-like family protein
Itr_sc000680.1_g00001.1G2-like family protein
Itr_sc000723.1_g00001.1G2-like family protein
Itr_sc000744.1_g00009.1G2-like family protein
Itr_sc000760.1_g00004.1G2-like family protein
Itr_sc000760.1_g00005.1G2-like family protein
Itr_sc000771.1_g00003.1G2-like family protein
Itr_sc000793.1_g00029.1G2-like family protein
Itr_sc000811.1_g00004.1G2-like family protein
Itr_sc000813.1_g00002.1G2-like family protein
Itr_sc000833.1_g00005.1G2-like family protein
Itr_sc000868.1_g00002.1G2-like family protein
Itr_sc000957.1_g00010.1G2-like family protein
Itr_sc001117.1_g00004.1G2-like family protein
Itr_sc001176.1_g00024.1G2-like family protein
Itr_sc001208.1_g00008.1G2-like family protein
Itr_sc001223.1_g00003.1G2-like family protein
Itr_sc001223.1_g00007.1G2-like family protein
Itr_sc001279.1_g00013.1G2-like family protein
Itr_sc001286.1_g00007.1G2-like family protein
Itr_sc001317.1_g00002.1G2-like family protein
Itr_sc001475.1_g00002.1G2-like family protein
Itr_sc001618.1_g00014.1G2-like family protein
Itr_sc001637.1_g00006.1G2-like family protein
Itr_sc002007.1_g00001.1G2-like family protein
Itr_sc002679.1_g00002.1G2-like family protein
Itr_sc002935.1_g00003.1G2-like family protein
Itr_sc003335.1_g00002.1G2-like family protein
Itr_sc006445.1_g00001.1G2-like family protein
Itr_sc031928.1_g00001.1G2-like family protein
Itr_sc035307.1_g00001.1G2-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