PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Chara braunii
MYB Family
Species TF ID Description
GBG60552.1MYB family protein
GBG60823.1MYB family protein
GBG61835.1MYB family protein
GBG62569.1MYB family protein
GBG62764.1MYB family protein
GBG66648.1MYB family protein
GBG67891.1MYB family protein
GBG68226.1MYB family protein
GBG68262.1MYB family protein
GBG70498.1MYB family protein
GBG70499.1MYB family protein
GBG74571.1MYB family protein
GBG74572.1MYB family protein
GBG74573.1MYB family protein
GBG82166.1MYB family protein
GBG85259.1MYB family protein
GBG90413.1MYB family protein
MYB Family Introduction

MYB factors represent a family of proteins that include the conserved MYB DNA-binding domain.The first MYB gene identified was the "oncogene" v-Myb derived from the avian myeloblastosis virus . Evidence obtained from sequence comparisons indicates that v-Myb may have originated from a vertebrate gene, which mutated once it became part of the virus. Many vertebrates contain three genes related to v-Myb c-Myb, A-Myb and B-Myb and other similar genes have been identified in insects, plants, fungi and slime moulds. The encoded proteins are crucial to the control of proliferation and differentiation in a number of cell types, and share the conserved MYB DNA-binding domain. This domain generally comprises up to three imperfect repeats, each forming a helix-turn-helix structure of about 53 amino acids. Three regularly spaced tryptophan residues, which form a tryptophan cluster in the three-dimensional helix-turn-helix structure, are characteristic of a MYB repeat. The three repeats in c-Myb are referred to as R1, R2 and R3; and repeats from other MYB proteins are categorised according to their similarity to either R1, R2 or R3.

In contrast to animals, plants contain a MYB-protein subfamily that is characterised by the R2R3-type MYB domain. MYB proteins can be classified into three subfamilies depending on the number of adjacent repeats in the MYB domain (one, two or three). We refer to MYB-like proteins with one repeat as "MYB1R factors", with two as "R2R3-type MYB" factors, and with three repeats as "MYB3R" factors.

Stracke R, Werber M, Weisshaar B.
The R2R3-MYB gene family in Arabidopsis thaliana.
Curr Opin Plant Biol. 2001 Oct;4(5):447-56. Review.
PMID: 11597504