9,10. MYB TFs are usually classified as 1R-MYB, R2R3-MYB, 3R-MYB or 4R-MYB, according to the number of conserved DNA-binding domains consisting of imperfect repeats (R) at the N terminus. Each repeat forms the hydrophobic core in a helix-turn-helix (HTH) structure, and ...
profile in sweet orange development and plays important roles in development and stress responses. In addition, 337 new putative microsatellites with flanking sequences sufficient for primer design were also identified from the 177 CsMYBs. These results provide a useful reference for the selection of ...
showed that JcMYB2 spatial structure has typical structure for R2R3-MYB proteins, namely two consecutive HTH (Helix-Turn-Helix) domains (Fig.2band Additional file3); these constitute its DNA-binding domain and are predict to bind the major groove of DNA. ...
33]. In the present study, we found a higher number of intron types in GmMYBs (ranging from one to five in the DNA-binding domain), which could be grouped into 14 patterns of intron presence and positions
In the R3-MYB-TFs, there are two domain types involved in anthocyanin inhibition. In one type, there is only one R3 domain, which does not directly contact DNA and has a conserved motif, [D/E]Lx2[R/K]x3Lx6Lx3R, that participates in interactions with BHLH-TFs, namely, AtCPC-like (...
The family of avian myeloblastosis proto-oncogene (MYB) transcription factors (TFs) is one of the largest and most abundant of its kind in plants [1]. Each N terminus of MYB family proteins has a highly conserved DNA-binding domain (DBD) consisting of 1–4 incomplete tandem repeats (R)...
A conserved map of the N-terminal R2R3 domain of MaMYB proteins was drawn using the weblogo website. The repeat regions of R2 and R3 formed three helixes in the DNA binding domain of MaMYBs, forming an HTH structure that was separated by periodic tryptophan residues (W, Trp), usually ...
MYB transcription factors are one of the largest protein families in plants and are characterized by highly conserved N-terminal MYB DNA-binding domain repeats that form three α-helices, the second and third of which are involved in the formation of a helix–turn–helix (HTH) fold [8,9]....
Based on the conservation of the DNA binding domain and of amino acid motifs in the C terminal domains, the members of this subfamily have been classified and divided into 23 subgroups [8]. The R2R3-MYB TFs play central roles in the control of plant-specific processes, including primary ...
The second and third helices form a helix-turn-helix (HTH) structure [3] that intercalates in the major groove when bound to DNA. The third α-helix is thought to play a recognition role in binding to a short DNA sequence [4]. MYB proteins can be classified into 4R-MYB (contain ...