Kim & Kende (2004): Previously, we described the AtGRF [Arabidopsis thaliana growth-regulating factor (GRF)] gene family, which encodes putative transcription factors that play a regulatory role in growth and development of leaves and cotyledons. We demonstrate here that the C-terminal region of GRF proteins has transactivation activity. In search of partner proteins for GRF1, we identified another gene family, GRF-interacting factor (GIF), which comprises three members. Sequence and molecular analysis showed that GIF1 is a functional homolog of the human SYT transcription coactivator. We found that the N-terminal region of GIF1 protein was involved in the interaction with GRF1.


1) Lang, D; Weiche, B; Timmerhaus, G; Richardt, S; Riano-Pachon, DM; Correa, LG; Reski, R; Mueller-Roeber, B; Rensing, SA. 2010. Genome-wide phylogenetic comparative analysis of plant transcriptional regulation: a timeline of loss, gain, expansion, and correlation with complexity. Genome Biol Evol. 2: 488-503 PubMed
2) Richardt, S; Lang, D; Reski, R; Frank, W; Rensing, SA. 2007. PlanTAPDB, a Phylogeny-Based Resource of Plant Transcription-Associated Proteins. Plant Physiol. 143(4): 1452–1466 PubMed PubMed
3) Kim, JH; Kende, H. 2004. A transcriptional coactivator, AtGIF1, is involved in regulating leaf growth and morphology in Arabidopsis. Proc Natl Acad Sci U S A. 101(36):13374-9 PubMed


Name: GIF
Class: TR
Number of species containing the TAP: 114
Number of available proteins: 330

The colour code corresponds to the rules for the domains:

should be contained
should not be contained

Domain rules:

(Domain names are clickable)

Phylogenetic tree for Archeaplastida:

No tree was calculated yet.

TAP distribution:

The following table shows the distribution of GIF over all species included in TAPscan. The values for e.g. a specific kingdom are shown in the tree below if you expand the tree for that kingdom.

Minimum Maximum Average Median Standard deviation

List of species containing GIF sorted by kingdomcladesupergrouporderfamily:

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expand kingdom Archaeplastida (351 proteins in 114 species)
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A list of species letter codes included in the protein names can be found here (opens in new tab).