Galactinol synthase (GolS) is theenzyme that catalyzes the first step of the biosynthesis of the raffinose family oligosaccharides (RFOs), andisinvolved in manybiological processes in plants.In the present study, four putative GolSgenes were identified in the Musa acuminatagenome. We further characterized these MaGolSgenes in terms of protein length, molecular weight, theoretical isoelectric point and 3D protein structure. Genomic organization revealed that most MaGolSgenes have four exons. The conserved motifs were identified,demonstrating high group-specificityof all MaGolS proteins. Multiple sequence alignment showedthat theAPSAA typical domainispresent in all GolS proteins. Comparativephylogenetic analysis oftheMaGolS proteins revealed three distinct groups.These data provide insight to support new studies adressing the role of GolSgenes in this important fruit species.
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