PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Hordeum vulgare
G2-like Family
Species TF ID Description
MLOC_10064.1G2-like family protein
MLOC_10064.2G2-like family protein
MLOC_10064.3G2-like family protein
MLOC_10064.4G2-like family protein
MLOC_10064.5G2-like family protein
MLOC_10378.2G2-like family protein
MLOC_10418.1G2-like family protein
MLOC_13636.1G2-like family protein
MLOC_13636.2G2-like family protein
MLOC_138.1G2-like family protein
MLOC_138.2G2-like family protein
MLOC_14844.2G2-like family protein
MLOC_14844.3G2-like family protein
MLOC_17213.1G2-like family protein
MLOC_17213.10G2-like family protein
MLOC_17213.2G2-like family protein
MLOC_17213.3G2-like family protein
MLOC_17213.4G2-like family protein
MLOC_17213.5G2-like family protein
MLOC_17213.6G2-like family protein
MLOC_17213.7G2-like family protein
MLOC_17213.8G2-like family protein
MLOC_17213.9G2-like family protein
MLOC_24056.1G2-like family protein
MLOC_24962.1G2-like family protein
MLOC_37446.1G2-like family protein
MLOC_43537.1G2-like family protein
MLOC_43537.3G2-like family protein
MLOC_43537.4G2-like family protein
MLOC_49594.1G2-like family protein
MLOC_52114.4G2-like family protein
MLOC_52114.5G2-like family protein
MLOC_52114.6G2-like family protein
MLOC_52114.7G2-like family protein
MLOC_52114.9G2-like family protein
MLOC_52271.2G2-like family protein
MLOC_52271.4G2-like family protein
MLOC_52271.5G2-like family protein
MLOC_52271.6G2-like family protein
MLOC_52706.1G2-like family protein
MLOC_52706.2G2-like family protein
MLOC_53840.1G2-like family protein
MLOC_53840.2G2-like family protein
MLOC_53840.3G2-like family protein
MLOC_53943.1G2-like family protein
MLOC_53943.2G2-like family protein
MLOC_53943.4G2-like family protein
MLOC_53958.1G2-like family protein
MLOC_53958.2G2-like family protein
MLOC_54829.1G2-like family protein
MLOC_54829.2G2-like family protein
MLOC_54829.3G2-like family protein
MLOC_54829.4G2-like family protein
MLOC_5585.1G2-like family protein
MLOC_5585.2G2-like family protein
MLOC_5585.3G2-like family protein
MLOC_56761.1G2-like family protein
MLOC_56761.2G2-like family protein
MLOC_56821.1G2-like family protein
MLOC_58335.2G2-like family protein
MLOC_58335.3G2-like family protein
MLOC_5837.1G2-like family protein
MLOC_5837.2G2-like family protein
MLOC_5837.3G2-like family protein
MLOC_5837.4G2-like family protein
MLOC_60074.1G2-like family protein
MLOC_60074.2G2-like family protein
MLOC_60074.3G2-like family protein
MLOC_60074.4G2-like family protein
MLOC_60074.5G2-like family protein
MLOC_60074.6G2-like family protein
MLOC_60074.7G2-like family protein
MLOC_60198.1G2-like family protein
MLOC_60198.2G2-like family protein
MLOC_60198.3G2-like family protein
MLOC_61146.1G2-like family protein
MLOC_61146.2G2-like family protein
MLOC_63597.4G2-like family protein
MLOC_63597.5G2-like family protein
MLOC_63597.6G2-like family protein
MLOC_63597.7G2-like family protein
MLOC_63597.8G2-like family protein
MLOC_64597.1G2-like family protein
MLOC_64597.2G2-like family protein
MLOC_64597.3G2-like family protein
MLOC_65279.11G2-like family protein
MLOC_65279.12G2-like family protein
MLOC_65279.13G2-like family protein
MLOC_65279.14G2-like family protein
MLOC_65279.15G2-like family protein
MLOC_65279.6G2-like family protein
MLOC_65279.9G2-like family protein
MLOC_65876.1G2-like family protein
MLOC_67081.1G2-like family protein
MLOC_67081.2G2-like family protein
MLOC_67081.3G2-like family protein
MLOC_67085.1G2-like family protein
MLOC_67085.2G2-like family protein
MLOC_67085.3G2-like family protein
MLOC_67453.1G2-like family protein
MLOC_69397.1G2-like family protein
MLOC_69397.2G2-like family protein
MLOC_69397.3G2-like family protein
MLOC_72007.1G2-like family protein
MLOC_72007.2G2-like family protein
MLOC_72007.3G2-like family protein
MLOC_72007.4G2-like family protein
MLOC_72013.1G2-like family protein
MLOC_72013.4G2-like family protein
MLOC_72252.1G2-like family protein
MLOC_72252.2G2-like family protein
MLOC_72690.1G2-like family protein
MLOC_73347.1G2-like family protein
MLOC_73347.2G2-like family protein
MLOC_79754.2G2-like family protein
MLOC_8187.1G2-like family protein
MLOC_8187.2G2-like family protein
MLOC_82002.1G2-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