PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Jatropha curcas
G2-like Family
Species TF ID Description
Jcr4S00030.150G2-like family protein
Jcr4S00095.80G2-like family protein
Jcr4S00138.140G2-like family protein
Jcr4S00295.180G2-like family protein
Jcr4S00345.20G2-like family protein
Jcr4S00446.20G2-like family protein
Jcr4S00460.70G2-like family protein
Jcr4S00460.80G2-like family protein
Jcr4S00614.10G2-like family protein
Jcr4S00699.50G2-like family protein
Jcr4S00701.20G2-like family protein
Jcr4S00722.40G2-like family protein
Jcr4S00722.50G2-like family protein
Jcr4S00823.40G2-like family protein
Jcr4S01425.10G2-like family protein
Jcr4S01444.90G2-like family protein
Jcr4S01532.10G2-like family protein
Jcr4S01545.20G2-like family protein
Jcr4S02165.50G2-like family protein
Jcr4S03734.10G2-like family protein
Jcr4S05011.40G2-like family protein
Jcr4S05184.20G2-like family protein
Jcr4S05495.20G2-like family protein
Jcr4S05523.40G2-like family protein
Jcr4S05732.10G2-like family protein
Jcr4S05937.50G2-like family protein
Jcr4S07187.20G2-like family protein
Jcr4S07198.10G2-like family protein
Jcr4S07592.20G2-like family protein
Jcr4S08531.10G2-like family protein
Jcr4S08558.10G2-like family protein
Jcr4S11906.10G2-like family protein
Jcr4S13092.20G2-like family protein
Jcr4S16439.10G2-like family protein
Jcr4S20314.10G2-like family protein
Jcr4U28891.10G2-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