PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Morus notabilis
G2-like Family
Species TF ID Description
XP_010091727.1G2-like family protein
XP_010091789.1G2-like family protein
XP_010092086.1G2-like family protein
XP_010092480.1G2-like family protein
XP_010092813.1G2-like family protein
XP_010093180.1G2-like family protein
XP_010093351.1G2-like family protein
XP_010093955.1G2-like family protein
XP_010095247.1G2-like family protein
XP_010095978.1G2-like family protein
XP_010096512.1G2-like family protein
XP_010096513.1G2-like family protein
XP_010096928.1G2-like family protein
XP_010097641.1G2-like family protein
XP_010098958.1G2-like family protein
XP_010099195.1G2-like family protein
XP_010099299.1G2-like family protein
XP_010101071.1G2-like family protein
XP_010101716.1G2-like family protein
XP_010102109.1G2-like family protein
XP_010102208.1G2-like family protein
XP_010102554.1G2-like family protein
XP_010102555.1G2-like family protein
XP_010104403.1G2-like family protein
XP_010104961.1G2-like family protein
XP_010105426.1G2-like family protein
XP_010106529.1G2-like family protein
XP_010107775.1G2-like family protein
XP_010107986.1G2-like family protein
XP_010108678.1G2-like family protein
XP_010109406.1G2-like family protein
XP_010109885.1G2-like family protein
XP_010109894.1G2-like family protein
XP_010110423.1G2-like family protein
XP_010111100.1G2-like family protein
XP_010112889.1G2-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