Abstract Trihelix gene family is a kind of small transcription factor family that is key in regulating
plant stress response and improving crop quality. In this study, 43 members of the Trihelix family
were selected from the whole genome database of maize by bioinformatics methods. In order to fur?
ther explore the function of the Trihelix transcription factor family of maize, chromosome localization
analysis, signal peptide analysis, subcellular localization analysis, phosphorylation site analysis, phy?
logenetic tree construction, protein structure analysis and conservative motif analysis were carried
out respectively. The results showed that the members of ZmTrihelix family are unevenly distributed on chromosome 1-10. Only ZmTrihelix1 signal peptide exists in this protein family; 83.7% of the pro?
tein family is located on the nucleus, 16.3% on chloroplast, cytoplasmic membrane and mitochon?
dria. Phosphorylation of the protein family is mainly concentrated on oxalic acid, serine and threo?
nine residues. The family is divided into five subfamilies, namely GT-1, GT-2, GTγ, SIP1 and SH4;
The members of these families are highly conservative, and each subfamily has its special domain.
The protein family consists of multiple helix, extended chain and corner structures. The research has
laid a foundation for exploring the functions of the members of maize Trihelix family and further pro?
vided reference for quality improvement and molecular breeding of maize.
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