Plant Transcription Factor Database
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Phoenix dactylifera
G2-like Family
Species TF ID Description
PDK_30s1009081g002G2-like family protein
PDK_30s1012611g005G2-like family protein
PDK_30s1014611g003G2-like family protein
PDK_30s1025391g002G2-like family protein
PDK_30s1044831g002G2-like family protein
PDK_30s1058171g001G2-like family protein
PDK_30s1066041g001G2-like family protein
PDK_30s1081791g004G2-like family protein
PDK_30s1094441g001G2-like family protein
PDK_30s1116211g001G2-like family protein
PDK_30s1125291g001G2-like family protein
PDK_30s1141531g006G2-like family protein
PDK_30s1179501g001G2-like family protein
PDK_30s6550950g002G2-like family protein
PDK_30s6550973g003G2-like family protein
PDK_30s6550989g009G2-like family protein
PDK_30s655271g007G2-like family protein
PDK_30s661191g015G2-like family protein
PDK_30s661361g008G2-like family protein
PDK_30s674801g004G2-like family protein
PDK_30s679311g001G2-like family protein
PDK_30s681141g002G2-like family protein
PDK_30s695651g003G2-like family protein
PDK_30s696621g001G2-like family protein
PDK_30s701911g003G2-like family protein
PDK_30s710711g004G2-like family protein
PDK_30s714041g001G2-like family protein
PDK_30s714681g011G2-like family protein
PDK_30s714681g012G2-like family protein
PDK_30s720491g004G2-like family protein
PDK_30s723941g001G2-like family protein
PDK_30s728141g003G2-like family protein
PDK_30s734231g001G2-like family protein
PDK_30s738571g007G2-like family protein
PDK_30s764071g001G2-like family protein
PDK_30s771701g004G2-like family protein
PDK_30s780842g001G2-like family protein
PDK_30s785961g002G2-like family protein
PDK_30s803301g004G2-like family protein
PDK_30s804221g003G2-like family protein
PDK_30s806121g001G2-like family protein
PDK_30s814491g001G2-like family protein
PDK_30s814541g003G2-like family protein
PDK_30s844721g010G2-like family protein
PDK_30s850271g001G2-like family protein
PDK_30s864791g001G2-like family protein
PDK_30s896621g017G2-like family protein
PDK_30s916311g004G2-like family protein
PDK_30s946681g001G2-like family protein
PDK_30s951241g002G2-like family protein
PDK_30s984861g008G2-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