NCBI Accession #
NP_180942.1
NCBI GenBank Nucleotide #
NM_128946.4
NCBI Official Full Name
Transcriptional factor B3 family protein / auxin-responsive factor AUX/IAA-like protein
NCBI Official Synonym Symbols
ARF3; AUXIN RESPONSE TRANSCRIPTION FACTOR 3; ETTIN; T1B8.30; T1B8_30
NCBI Protein Information
Transcriptional factor B3 family protein / auxin-responsive factor AUX/IAA-like protein
NCBI Summary
ettin (ett) mutations have pleiotropic effects on Arabidopsis flower development, causing increases in perianth organ number, decreases in stamen number and anther formation, and apical-basal patterning defects in the gynoecium. The ETTIN gene encodes a protein with homology to DNA binding proteins which bind to auxin response elements. ETT transcript is expressed throughout stage 1 floral meristems and subsequently resolves to a complex pattern within petal, stamen and carpel primordia. ETT probably functions to impart regional identity in floral meristems that affects perianth organ number spacing, stamen formation, and regional differentiation in stamens and the gynoecium. During stage 5, ETT expression appears in a ring at the top of the floral meristem before morphological appearance of the gynoecium, consistent with the proposal that ETT is involved in prepatterning apical and basal boundaries in the gynoecium primordium. It is a target of the ta-siRNA tasiR-ARF.
UniProt Synonym Gene Names
ETT
UniProt Protein Name
Auxin response factor 3
UniProt Synonym Protein Names
Protein ETTIN
UniProt Primary Accession #
O23661
UniProt Secondary Accession #
O23670; O81087; Q33DU9
UniProt Related Accession #
O23661
UniProt Comments
Auxin response factors (ARFs) are transcriptional factors that bind specifically to the DNA sequence 5'-TGTCTC-3' found in the auxin-responsive promoter elements (AuxREs). Could act as transcriptional activator or repressor. Formation of heterodimers with Aux/IAA proteins may alter their ability to modulate early auxin response genes expression. Involved in the establishment or elaboration of tissue patterning during gynoecial development.