PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Sphagnum fallax
G2-like Family
Species TF ID Description
Sphfalx0000s0040.1.pG2-like family protein
Sphfalx0000s0040.2.pG2-like family protein
Sphfalx0000s0040.3.pG2-like family protein
Sphfalx0000s0040.4.pG2-like family protein
Sphfalx0001s0189.1.pG2-like family protein
Sphfalx0001s0234.1.pG2-like family protein
Sphfalx0002s0165.1.pG2-like family protein
Sphfalx0002s0165.2.pG2-like family protein
Sphfalx0003s0329.1.pG2-like family protein
Sphfalx0004s0125.1.pG2-like family protein
Sphfalx0004s0229.1.pG2-like family protein
Sphfalx0006s0186.1.pG2-like family protein
Sphfalx0009s0225.1.pG2-like family protein
Sphfalx0009s0225.2.pG2-like family protein
Sphfalx0010s0233.1.pG2-like family protein
Sphfalx0014s0203.1.pG2-like family protein
Sphfalx0016s0215.1.pG2-like family protein
Sphfalx0021s0082.1.pG2-like family protein
Sphfalx0021s0179.1.pG2-like family protein
Sphfalx0025s0066.1.pG2-like family protein
Sphfalx0026s0176.1.pG2-like family protein
Sphfalx0036s0015.1.pG2-like family protein
Sphfalx0040s0035.1.pG2-like family protein
Sphfalx0054s0033.1.pG2-like family protein
Sphfalx0059s0014.1.pG2-like family protein
Sphfalx0063s0091.1.pG2-like family protein
Sphfalx0078s0059.1.pG2-like family protein
Sphfalx0078s0062.1.pG2-like family protein
Sphfalx0088s0085.1.pG2-like family protein
Sphfalx0088s0085.2.pG2-like family protein
Sphfalx0119s0044.1.pG2-like family protein
Sphfalx0119s0044.2.pG2-like family protein
Sphfalx0132s0007.1.pG2-like family protein
Sphfalx0140s0042.1.pG2-like family protein
Sphfalx0140s0042.2.pG2-like family protein
Sphfalx0140s0043.1.pG2-like family protein
Sphfalx0140s0043.2.pG2-like family protein
Sphfalx0140s0043.3.pG2-like family protein
Sphfalx0142s0001.1.pG2-like family protein
Sphfalx0167s0006.1.pG2-like family protein
Sphfalx0170s0003.1.pG2-like family protein
Sphfalx0173s0028.1.pG2-like family protein
Sphfalx0173s0030.1.pG2-like family protein
Sphfalx0191s0003.1.pG2-like family protein
Sphfalx0202s0008.1.pG2-like family protein
Sphfalx0234s0027.1.pG2-like family protein
Sphfalx0326s0015.10.pG2-like family protein
Sphfalx0326s0015.11.pG2-like family protein
Sphfalx0326s0015.12.pG2-like family protein
Sphfalx0326s0015.1.pG2-like family protein
Sphfalx0326s0015.2.pG2-like family protein
Sphfalx0326s0015.3.pG2-like family protein
Sphfalx0326s0015.4.pG2-like family protein
Sphfalx0326s0015.5.pG2-like family protein
Sphfalx0326s0015.6.pG2-like family protein
Sphfalx0326s0015.7.pG2-like family protein
Sphfalx0326s0015.8.pG2-like family protein
Sphfalx0326s0015.9.pG2-like family protein
Sphfalx0331s0001.1.pG2-like family protein
Sphfalx0466s0002.1.pG2-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