PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Hevea brasiliensis
BBR-BPC Family
Species TF ID Description
XP_021641322.1BBR-BPC family protein
XP_021641323.1BBR-BPC family protein
XP_021641324.1BBR-BPC family protein
XP_021641325.1BBR-BPC family protein
XP_021641326.1BBR-BPC family protein
XP_021651413.1BBR-BPC family protein
XP_021651414.1BBR-BPC family protein
XP_021652352.1BBR-BPC family protein
XP_021652353.1BBR-BPC family protein
XP_021652354.1BBR-BPC family protein
XP_021652355.1BBR-BPC family protein
XP_021652356.1BBR-BPC family protein
XP_021652357.1BBR-BPC family protein
XP_021652358.1BBR-BPC family protein
XP_021652359.1BBR-BPC family protein
XP_021659561.1BBR-BPC family protein
XP_021659562.1BBR-BPC family protein
XP_021668653.1BBR-BPC family protein
XP_021668661.1BBR-BPC family protein
XP_021668670.1BBR-BPC family protein
XP_021668678.1BBR-BPC family protein
XP_021668687.1BBR-BPC family protein
XP_021668694.1BBR-BPC family protein
XP_021668703.1BBR-BPC family protein
XP_021668712.1BBR-BPC family protein
XP_021682270.1BBR-BPC family protein
XP_021682279.1BBR-BPC family protein
XP_021682287.1BBR-BPC family protein
XP_021682295.1BBR-BPC family protein
XP_021682299.1BBR-BPC family protein
XP_021682305.1BBR-BPC family protein
XP_021682312.1BBR-BPC family protein
XP_021682318.1BBR-BPC family protein
XP_021685960.1BBR-BPC family protein
XP_021685961.1BBR-BPC family protein
XP_021692608.1BBR-BPC family protein
XP_021692610.1BBR-BPC family protein
XP_021692611.1BBR-BPC family protein
XP_021692612.1BBR-BPC family protein
XP_021692613.1BBR-BPC family protein
XP_021692614.1BBR-BPC family protein
XP_021692615.1BBR-BPC family protein
XP_021692616.1BBR-BPC family protein
XP_021692617.1BBR-BPC family protein
BBR/BPC Family Introduction

We identified BASIC PENTACYSTEINE1 (BPC1) as a regulator of the homeotic Arabidopsis thaliana gene SEEDSTICK (STK), which controls ovule identity, and characterized its mechanism of action. A combination of tethered particle motion analysis and electromobility shift assays revealed that BPC1 is able to induce conformational changes by cooperative binding to purine-rich elements present in the STK regulatory sequence. Analysis of STK expression in the bpc1 mutant showed that STK is upregulated. Our results give insight into the regulation of gene expression in plants and provide the basis for further studies to understand the mechanisms that control ovule identity in Arabidopsis.

Kooiker M, Airoldi CA, Losa A, Manzotti PS, Finzi L, Kater MM, Colombo L.
BASIC PENTACYSTEINE1, a GA binding protein that induces conformational changes in the regulatory region of the homeotic Arabidopsis gene SEEDSTICK.
Plant Cell. 2005 Mar;17(3):722-9. Epub 2005 Feb 18.
PMID: 15722463

BBR is nuclear targeted and is a characterized nuclear localization signal (NLS) sequence, a DNA-binding domain extended up to 90 aa at the C-terminus and a putative N-terminal activation domain. The corresponding gene has no introns and is ubiquitously expressed in barley tissues. In co-transfection experiments, BBR activates (GA/TC)8-containing promoters, and its overexpression in tobacco leads to a pronounced leaf shape modification. BBR has properties of a GAGA-binding factor, but the corresponding gene has no sequence homology to Trl and Psq of Drosophila, which encode functionally analogous proteins. In Arabidopsis, (GA/TC)8 repeats occur particularly within 1500 bp upstream of gene start codons included in some homeodomain genes of different classes. The data presented suggest that expression of the barley BKn3 is regulated, at least in part, by the binding of the transcription factor BBR to GA/TC repeats.

Santi L, Wang Y, Stile MR, Berendzen K, Wanke D, Roig C, Pozzi C, Muller K, Muller J, Rohde W, Salamini F.
The GA octodinucleotide repeat binding factor BBR participates in the transcriptional regulation of the homeobox gene Bkn3.
Plant J, 2003. 34(6): p. 813-26.
PMID: 12795702