PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Phalaenopsis equestris
bZIP Family
Species TF ID Description
PEQU_01376bZIP family protein
PEQU_02442bZIP family protein
PEQU_02836bZIP family protein
PEQU_03164bZIP family protein
PEQU_03239bZIP family protein
PEQU_03258bZIP family protein
PEQU_03719bZIP family protein
PEQU_04323bZIP family protein
PEQU_04570bZIP family protein
PEQU_06044bZIP family protein
PEQU_06598bZIP family protein
PEQU_06926bZIP family protein
PEQU_07286bZIP family protein
PEQU_07348bZIP family protein
PEQU_07664bZIP family protein
PEQU_07750bZIP family protein
PEQU_08012bZIP family protein
PEQU_09868bZIP family protein
PEQU_10386bZIP family protein
PEQU_10397bZIP family protein
PEQU_10719bZIP family protein
PEQU_11409bZIP family protein
PEQU_13318bZIP family protein
PEQU_13446bZIP family protein
PEQU_13668bZIP family protein
PEQU_14192bZIP family protein
PEQU_14737bZIP family protein
PEQU_14742bZIP family protein
PEQU_15747bZIP family protein
PEQU_16016bZIP family protein
PEQU_17233bZIP family protein
PEQU_17330bZIP family protein
PEQU_18261bZIP family protein
PEQU_18328bZIP family protein
PEQU_18331bZIP family protein
PEQU_18946bZIP family protein
PEQU_18948bZIP family protein
PEQU_19461bZIP family protein
PEQU_19571bZIP family protein
PEQU_21525bZIP family protein
PEQU_22830bZIP family protein
PEQU_23109bZIP family protein
PEQU_23142bZIP family protein
PEQU_23246bZIP family protein
PEQU_24398bZIP family protein
PEQU_26299bZIP family protein
PEQU_26966bZIP family protein
PEQU_29244bZIP family protein
PEQU_29276bZIP family protein
PEQU_29829bZIP family protein
PEQU_30721bZIP family protein
PEQU_31241bZIP family protein
PEQU_32625bZIP family protein
PEQU_33918bZIP family protein
PEQU_34977bZIP family protein
PEQU_35452bZIP family protein
PEQU_35491bZIP family protein
PEQU_35719bZIP family protein
PEQU_38947bZIP family protein
PEQU_39221bZIP family protein
PEQU_39746bZIP family protein
PEQU_40289bZIP family protein
PEQU_40609bZIP family protein
PEQU_40965bZIP 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