Abstract
Kalamiella piersonii is a newly identified bacterial species, first isolated from surfaces of the International Space Station (ISS). It also appears as a novel human pathogen reported to be implicated in bacteremia and kidney stone disease. Here, we report the first complete genome of a multidrug-resistant strain of K. piersonii (GABEKP28), isolated from the saliva of a patient with treatment-resistant schizophrenia (TRS), to determine the mobile genetic elements (MGEs), antibiotic resistance genes (ARGs), and virulence factors (VFs) harboured by such a strain of this novel species. Whole-genome sequencing was performed using DNABSEQ (PE150) and Nanopore MinION platforms. Hybrid assembly was conducted using Unicycler v0.5.0. Genome assembly quality was verified using QUAST v5.0.2. The assembly was annotated using PROKKA v1.14.5. ARGs and VFs were identified using Abricate v1.0.0. K. piersonii strain GABEKP28 was classified as multidrug-resistant while also carrying plasmidic genetic determinants associated with a hypervirulent phenotype. The complete genome size is 3 881 479 bp and has a guanine-cytosine content of 57.76% while it encodes for 3 525 chromosome coding sequences. The strain was also identified to carry three plasmids of 513 647 bp, 261 771 bp, and 106 029 bp, respectively. K.piersonii GABEKP28 is the first complete genome of this species to be submitted to GenBank and only the second to be sequenced from a human host. The whole-genome sequencing data with multiple plasmids, ARGs, and VFs will aid in understanding the pathogenicity, evolution, and phylogeny of this novel opportunistic pathogen.
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