Genome-Wide Identification and Functional Characterization of the Glycosyltransferase 43 (GT43) Gene Family in Sorghum bicolor for Biofuel Development: A Comprehensive Study

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Abstract
Sorghum (Sorghum bicolor) is an essential bioenergy crop. Cellulosic and non-cellulosic polysaccharides, which can be transformed into biofuels, comprise most of its biomass. Many glycosyltransferases (GT) families, including GT43, are involved in the biosynthesis of xylan in plants’ primary and secondary cells. In this study, the GT43 gene family was identified, and its secondary structure and a three-dimensional (3D) model were constructed. Additionally, subcellular localization, detection of motifs, and analyses of its phylogenetic tree, physiochemical properties, protein–protein interaction network, gene structure, functional domain, gene duplication, Cis-acting elements, sequence logos, multiple sequence alignment, and gene expression profiles were performed based on RNA-sequence analyses. As a result, eleven members of the GT43 gene family were identified, and the phylogenetic tree of the GT43 gene family showed that all GT43 genes had evolutionary relationships with sorghum. Analyses of gene structure, motifs, sequence logos, and multiple sequence alignment showed that all members of the GT43 protein family were highly conserved. Subcellular localization showed all members of the GT43 protein family were localized in different compartments of sorghum. The secondary structure of the GT43 genes comprised different percentages of α-helices, random coils, β-turns, and extended strands. The tertiary structure model showed that all GT43 proteins had similar 3D structures. The results of the current study indicated that members of the GT43 gene family (Sobic.010G238800, Sobic.003G254700, and Sobic.001G409100) were highly expressed in internodes of the sorghum plant, based on RNA-Sequencing. The framework used in this study will be valuable for advancing research aligned with modern technology requirements and for enhancing understanding of the relationships among GT43 genes in Sorghum bicolor.
Funding Information
  • the Hainan University Research Initiation Project Fund (XJ2400005264)

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