Plant Transcription Factor Database
Previous version: v3.0
Petunia inflata
G2-like Family
Species TF ID Description
Peinf101Scf00032g08009.1G2-like family protein
Peinf101Scf00032g10011.1G2-like family protein
Peinf101Scf00049g01018.1G2-like family protein
Peinf101Scf00071g19012.1G2-like family protein
Peinf101Scf00100g01010.1G2-like family protein
Peinf101Scf00102g44013.1G2-like family protein
Peinf101Scf00146g17037.1G2-like family protein
Peinf101Scf00168g03006.1G2-like family protein
Peinf101Scf00175g07024.1G2-like family protein
Peinf101Scf00181g08015.1G2-like family protein
Peinf101Scf00232g08023.1G2-like family protein
Peinf101Scf00254g00014.1G2-like family protein
Peinf101Scf00335g03016.1G2-like family protein
Peinf101Scf00370g06008.1G2-like family protein
Peinf101Scf00413g06025.1G2-like family protein
Peinf101Scf00434g02022.1G2-like family protein
Peinf101Scf00441g06019.1G2-like family protein
Peinf101Scf00442g01018.1G2-like family protein
Peinf101Scf00459g06026.1G2-like family protein
Peinf101Scf00523g12007.1G2-like family protein
Peinf101Scf00536g05009.1G2-like family protein
Peinf101Scf00710g02016.1G2-like family protein
Peinf101Scf00713g11024.1G2-like family protein
Peinf101Scf00765g06001.1G2-like family protein
Peinf101Scf00782g13022.1G2-like family protein
Peinf101Scf00824g06010.1G2-like family protein
Peinf101Scf00835g07014.1G2-like family protein
Peinf101Scf00879g05009.1G2-like family protein
Peinf101Scf00979g02022.1G2-like family protein
Peinf101Scf01077g00019.1G2-like family protein
Peinf101Scf01145g04011.1G2-like family protein
Peinf101Scf01154g01010.1G2-like family protein
Peinf101Scf01180g01015.1G2-like family protein
Peinf101Scf01271g00013.1G2-like family protein
Peinf101Scf01294g06004.1G2-like family protein
Peinf101Scf01315g00012.1G2-like family protein
Peinf101Scf01345g01007.1G2-like family protein
Peinf101Scf01347g02015.1G2-like family protein
Peinf101Scf01347g02016.1G2-like family protein
Peinf101Scf01368g03006.1G2-like family protein
Peinf101Scf01633g01033.1G2-like family protein
Peinf101Scf01670g01013.1G2-like family protein
Peinf101Scf01734g02004.1G2-like family protein
Peinf101Scf01920g00011.1G2-like family protein
Peinf101Scf02190g00005.1G2-like family protein
Peinf101Scf02279g02002.1G2-like family protein
Peinf101Scf02569g01004.1G2-like family protein
Peinf101Scf02670g00019.1G2-like family protein
Peinf101Scf02798g00004.1G2-like family protein
Peinf101Scf02857g00010.1G2-like family protein
Peinf101Scf03659g01009.1G2-like family protein
Peinf101Scf04740g00003.1G2-like family protein
Peinf101Scf05729g00012.1G2-like family protein
Peinf101Scf09248g00006.1G2-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