PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Previous version: v3.0 v4.0
Medicago truncatula
HB-other Family
Species TF ID Description
Medtr1g105425.1HB-other family protein
Medtr2g014490.1HB-other family protein
Medtr2g014490.2HB-other family protein
Medtr2g030680.1HB-other family protein
Medtr2g030700.1HB-other family protein
Medtr2g030720.1HB-other family protein
Medtr3g045830.1HB-other family protein
Medtr3g107530.1HB-other family protein
Medtr4g078860.1HB-other family protein
Medtr4g078860.2HB-other family protein
Medtr4g078860.3HB-other family protein
Medtr4g078860.4HB-other family protein
Medtr4g088375.1HB-other family protein
Medtr4g088375.2HB-other family protein
Medtr4g088375.4HB-other family protein
Medtr5g046040.1HB-other family protein
Medtr5g089870.1HB-other family protein
Medtr6g027290.1HB-other family protein
Medtr7g027265.1HB-other family protein
Medtr8g061040.1HB-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.