NCBI Accession #
NP_564180.1
NCBI GenBank Nucleotide #
NM_102124.3
NCBI Official Full Name
gigantea protein (GI)
NCBI Official Synonym Symbols
FB; GIGANTEA; T22J18.6; T22J18_6
NCBI Protein Information
gigantea protein (GI)
NCBI 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.
UniProt Protein Name
Protein GIGANTEA
UniProt Primary Accession #
Q9SQI2
UniProt Secondary Accession #
O64381; O80545; Q9S7N0
UniProt Related Accession #
Q9SQI2
UniProt Comments
Involved in regulation of circadian rhythm and photoperiodic flowering. May play a role in maintenance of circadian amplitude and period length. Is involved in phytochrome B signaling. Stabilizes ADO3 and the circadian photoreceptor ADO1/ZTL. Regulates 'CONSTANS' (CO) in the long-day flowering pathway by modulating the ADO3-dependent protein stability of CDF1 and CDF2, but is not essential to activate CO transcription. Regulates, via the microRNA miR172, a CO-independent pathway that promotes photoperiodic flowering by inducing 'FLOWERING LOCUS T'.