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<b>Abstract</b> <p>Bacteria of the phylum <i>Planctomycetota</i> inhabit a wide spectrum of natural and anthropogenic environments. Their very large genomes have a high glycolytic potential due to a wide range of encoded glycoside hydrolases. This work is devoted to the study of genetic diversity of potential α-galactosidases and α‑<i>N</i>-acetylgalactosaminidases in planctomycetes. Analysis of genomic and metagenomic sequences of planctomycetes revealed the presence of the genes encoding proteins of all previously known families of glycoside hydrolases containing experimentally characterized enzymes of these two types. Phylogenetic analysis demonstrated multiple lateral transfers of these genes from bacteria of diverse phyla. The proteins encoded in the genomes of the <i>Humisphaera borealis</i> and <i>Paludisphaera mucosa</i> type strains are examined in detail.</p>

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α-Galactosidases and α-N-Acetylgalactosaminidases of Planctomycetes: Origin and Genetic Diversity

  • 期刊论文

  • 发表日期：

    2025年9月17日

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  • D. G. Naumoff

摘要

Abstract

Bacteria of the phylum Planctomycetota inhabit a wide spectrum of natural and anthropogenic environments. Their very large genomes have a high glycolytic potential due to a wide range of encoded glycoside hydrolases. This work is devoted to the study of genetic diversity of potential α-galactosidases and α‑N-acetylgalactosaminidases in planctomycetes. Analysis of genomic and metagenomic sequences of planctomycetes revealed the presence of the genes encoding proteins of all previously known families of glycoside hydrolases containing experimentally characterized enzymes of these two types. Phylogenetic analysis demonstrated multiple lateral transfers of these genes from bacteria of diverse phyla. The proteins encoded in the genomes of the Humisphaera borealis and Paludisphaera mucosa type strains are examined in detail.