PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Spirodela polyrhiza
HB-other Family
Species TF ID Description
Spipo0G0013500HB-other family protein
Spipo11G0003000HB-other family protein
Spipo14G0025000HB-other family protein
Spipo15G0040500HB-other family protein
Spipo21G0004100HB-other family protein
Spipo2G0052100HB-other family protein
Spipo30G0005400HB-other family protein
Spipo31G0000300HB-other family protein
Spipo3G0038700HB-other family protein
HB-other Family Introduction

A homeobox (HB) encodes a protein domain, the homeodomain (HD), which is a conserved 60-amino acid motif present in transcription factors found in all the eukaryotic organisms. This 60-amino acid sequence folds into a characteristic three-helix structure that is able to interact specifically with DNA. Most HDs are able to bind DNA as monomers with high affinity, through interactions made by helix III (the so-called recognition helix) and a disordered N-terminal arm located beyond helix I. The high degree of conservation of this type of domain among diverse proteins from different kingdoms indicates that this structure is crucial to maintain the HD functionality and that the role played by this domain is vital.

Ariel FD, Manavella PA, Dezar CA, Chan RL.
The true story of the HD-Zip family.
Trends Plant Sci, 2007. 12(9): p. 419-26.
PMID: 17698401


Note: In plantTFDB, proteins of HB-other family include HB superfamily proteins that cannot be classified as HD-ZIP, TALE, WOX and HB-PHD.