GI gigantea protein (GI) [Arabidopsis thaliana (thale cress)] - Gene

Summary

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Official Symbol: GI
Official Full Name: gigantea protein (GI)
Primary source: TAIR:AT1G22770
Locus tag: AT1G22770
See related: Araport:AT1G22770
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Arabidopsis thaliana (ecotype: Columbia)
Lineage: Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis
Also known as: FB; GIGANTEA; T22J18.6; T22J18_6
Summary: Together with CONSTANTS (CO) and FLOWERING LOCUS T (FT), GIGANTEA promotes flowering under long days in a circadian clock-controlled flowering pathway. GI acts earlier than CO and FT in the pathway by increasing CO and FT mRNA abundance. Located in the nucleus. Regulates several developmental processes, including photoperiod-mediated flowering, phytochrome B signaling, circadian clock, carbohydrate metabolism, and cold stress response. The gene's transcription is controlled by the circadian clock and it is post-transcriptionally regulated by light and dark. Forms a complex with FKF1 on the CO promoter to regulate CO expression.
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Genomic context

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See GI in Genome Data Viewer

Location:: chromosome: 1

Exon count:: 14

Sequence:: Chromosome: 1; NC_003070.9 (8061751..8067790)

Chromosome 1 - NC_003070.9 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:: NC_003070.9

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

HOS15 represses flowering by promoting GIGANTEA degradation in response to low temperature in Arabidopsis.
Title: HOS15 represses flowering by promoting GIGANTEA degradation in response to low temperature in Arabidopsis.
The Na(+)/H(+) antiporter SALT OVERLY SENSITIVE 1 regulates salt compensation of circadian rhythms by stabilizing GIGANTEA in Arabidopsis.
Title: The Na(+)/H(+) antiporter SALT OVERLY SENSITIVE 1 regulates salt compensation of circadian rhythms by stabilizing GIGANTEA in Arabidopsis.
Compensatory Mutations in GI and ZTL May Modulate Temperature Compensation in the Circadian Clock.
Title: Compensatory Mutations in GI and ZTL May Modulate Temperature Compensation in the Circadian Clock.
Photoperiod sensing of the circadian clock is controlled by EARLY FLOWERING 3 and GIGANTEA.
Title: Photoperiod sensing of the circadian clock is controlled by EARLY FLOWERING 3 and GIGANTEA.
GIGANTEA Shapes the Photoperiodic Rhythms of Thermomorphogenic Growth in Arabidopsis.
Title: GIGANTEA Shapes the Photoperiodic Rhythms of Thermomorphogenic Growth in Arabidopsis.
GIGANTEA modulates gibberellin signaling through the stabilization of the DELLA proteins
Title: GIGANTEA gates gibberellin signaling through stabilization of the DELLA proteins in Arabidopsis.
GI plays a pivotal role in CO stability for the precise control of flowering by coordinating balanced functional properties of FKF1 and ZTL.
Title: GIGANTEA Regulates the Timing Stabilization of CONSTANS by Altering the Interaction between FKF1 and ZEITLUPE.
Time-resolved interaction proteomics of the GIGANTEA protein under diurnal cycles in Arabidopsis.
Title: Time-resolved interaction proteomics of the GIGANTEA protein under diurnal cycles in Arabidopsis.
Arabidopsis GIGANTEA negatively regulates chloroplast biogenesis and resistance to herbicide butafenacil.
Title: Arabidopsis GIGANTEA negatively regulates chloroplast biogenesis and resistance to herbicide butafenacil.
daily rhythms of GIGANTEA expression respond to day length in a way that depends on the latitude of origin of accessions
Title: The timing of GIGANTEA expression during day/night cycles varies with the geographical origin of Arabidopsis accessions.

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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NM_102124.3

Supported by ESTs:

Gene Ontology Provided by TAIR

Function	Evidence Code	Pubs
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
acts_upstream_of_or_within circadian rhythm	IDA Inferred from Direct Assay more info	PubMed
acts_upstream_of_or_within flower development	TAS Traceable Author Statement more info	PubMed
acts_upstream_of_or_within positive regulation of long-day photoperiodism, flowering	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within regulation of DNA-templated transcription	IDA Inferred from Direct Assay more info	PubMed
acts_upstream_of_or_within regulation of circadian rhythm	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within response to blue light	IDA Inferred from Direct Assay more info	PubMed
acts_upstream_of_or_within response to cold	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within response to far red light	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within response to hydrogen peroxide	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within temperature compensation of the circadian clock	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
located_in nucleoplasm	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	ISM Inferred from Sequence Model more info

General protein information

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Preferred Names: gigantea protein (GI)

NP_564180.1

GIGANTEA (GI); Has 351 Blast hits to 349 proteins in 54 species: Archae - 0; Bacteria - 0; Metazoa - 0; Fungi - 0; Plants - 351; Viruses - 0; Other Eukaryotes - 0 (source: NCBI BLink).