PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Pinus taeda
bZIP Family
Species TF ID Description
Pta001286bZIP family protein
Pta001414bZIP family protein
Pta001530bZIP family protein
Pta003414bZIP family protein
Pta003850bZIP family protein
Pta004164bZIP family protein
Pta004688bZIP family protein
Pta005918bZIP family protein
Pta006017bZIP family protein
Pta006426bZIP family protein
Pta006815bZIP family protein
Pta007253bZIP family protein
Pta007335bZIP family protein
Pta007702bZIP family protein
Pta008068bZIP family protein
Pta008683bZIP family protein
Pta008737bZIP family protein
Pta008860bZIP family protein
Pta008955bZIP family protein
Pta009022bZIP family protein
Pta010074bZIP family protein
Pta011435bZIP family protein
Pta012035bZIP family protein
Pta012304bZIP family protein
Pta012462bZIP family protein
Pta002833bZIP family protein
Pta003018bZIP family protein
Pta004643bZIP family protein
Pta007232bZIP family protein
Pta009787bZIP family protein
Pta012432bZIP family protein
bZIP Family Introduction

The bZIP domain consists of two structural features located on a contiguous alpha-helix: first, a basic region of ~ 16 amino acid residues containing a nuclear localization signal followed by an invariant N-x7-R/K motif that contacts the DNA; and, second, a heptad repeat of leucines or other bulky hydrophobic amino acids positioned exactly nine amino acids towards the C-terminus, creating an amphipathic helix. To bind DNA, two subunits adhere via interactions between the hydrophobic sides of their helices, which creates a superimposing coiled-coil structure. The ability to form homo- and heterodimers is influenced by the electrostatic attraction and repulsion of polar residues flanking the hydrophobic interaction surface of the helices.

Plant bZIP proteins preferentially bind to DNA sequences with an ACGT core. Binding specificity is regulated by flanking nucleotides. Plant bZIPs preferentially bind to the A-box (TACGTA), C-box (GACGTC) and G-box (CACGTG), but there are also examples of nonpalindromic binding sites.

Jakoby M, Weisshaar B, Droge-Laser W, Vicente-Carbajosa J, Tiedemann J, Kroj T, Parcy F
bZIP transcription factors in Arabidopsis.
Trends Plant Sci, 2002. 7(3): p. 106-11.
PMID: 11906833