Plant Transcription Factor Database
Previous version: v1.0, v2.0, v3.0
Vitis vinifera
G2-like Family
Species TF ID Description
GSVIVT01000606001G2-like family protein
GSVIVT01001374001G2-like family protein
GSVIVT01001376001G2-like family protein
GSVIVT01003551001G2-like family protein
GSVIVT01005342001G2-like family protein
GSVIVT01007064001G2-like family protein
GSVIVT01007065001G2-like family protein
GSVIVT01009589001G2-like family protein
GSVIVT01011163001G2-like family protein
GSVIVT01011823001G2-like family protein
GSVIVT01011942001G2-like family protein
GSVIVT01012707001G2-like family protein
GSVIVT01013085001G2-like family protein
GSVIVT01015462001G2-like family protein
GSVIVT01015900001G2-like family protein
GSVIVT01019971001G2-like family protein
GSVIVT01020604001G2-like family protein
GSVIVT01020718001G2-like family protein
GSVIVT01020827001G2-like family protein
GSVIVT01021072001G2-like family protein
GSVIVT01021225001G2-like family protein
GSVIVT01022645001G2-like family protein
GSVIVT01023401001G2-like family protein
GSVIVT01024383001G2-like family protein
GSVIVT01024687001G2-like family protein
GSVIVT01024916001G2-like family protein
GSVIVT01025502001G2-like family protein
GSVIVT01025785001G2-like family protein
GSVIVT01025867001G2-like family protein
GSVIVT01026319001G2-like family protein
GSVIVT01028403001G2-like family protein
GSVIVT01029458001G2-like family protein
GSVIVT01030315001G2-like family protein
GSVIVT01031804001G2-like family protein
GSVIVT01032776001G2-like family protein
GSVIVT01033381001G2-like family protein
GSVIVT01033515001G2-like family protein
GSVIVT01033528001G2-like family protein
GSVIVT01034259001G2-like family protein
GSVIVT01036717001G2-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