Analysis of the structure and function of the FtbHLH3 protein. (A) Comparison of FtbHLH3 with other known bHLH proteins using the ClustalX software. An ACT-like region, a putative NLS, and a bHLH conserved domain are indicated. The accession numbers of these proteins in GenBank are FtbHLH3 (KU296217) from Fagopyrum tataricum, AtbHLH93 (AED98080) from Arabidopsis thaliana, AtbHLH61 (AF488594) from Arabidopsis thaliana, AtbHLH116 (Y079016) from Arabidopsis thaliana, VvbHLH (AFR78197) from Vitis vinifera, NtbHLH93 (XP_016487716) from Nicotiana tabacum. (B) Phylogenetic relationship of FtbHLH3 with other bHLH proteins. The GenBank accession numbers are VvMYCA1 (EF193002) from Vitis vinifera, MdbHLH33 (ABB84474) from Malus domestica, FtbHLH1 (KT737454) from Fagopyrum tataricum, AtMYC1 (NP_191957) from Arabidopsis thaliana, PhJAF13 (AAC39455) from Petunia hybrida, AtGL3 (Q9FN69) from Arabidopsis thaliana, AtbHLH24 (Q9FUA4) from Arabidopsis thaliana, AtALC (OAO95101) from Arabidopsis thaliana, AtbHLH54 (Q8LEG1) from Arabidopsis thaliana, AtBEE1 (OAP12570) from Arabidopsis thaliana, AtbHLH31 (Q0JXE7) from Arabidopsis thaliana, FtbHLH2 (KT737455) from Fagopyrum tataricum, PebHLH35 (KJ363186) from Populus euphratica, AtbHLH116 (Y079016) from Arabidopsis thaliana, CsICE1 (XP_010514336) from Camellia sativa, PtrbHLH (AFY17139) from Poncirus trifoliata, FtbHLH3 (KU296217) from Fagopyrum tataricum, AtbHLH61 (AF488594) from Arabidopsis thaliana, AtbHLH93 (AED98080) from Arabidopsis thaliana, AtbHLH122 (Q9C690) from Arabidopsis thaliana, FtbHLH4 (ALY11153) from Fagopyrum tataricum.