biostudies-literatureUnknown7(9)Shen CYIn this study, we sequenced and characterized the complete mitochondrial genome (mitogenome) of <i>Quasilineus sinicus</i> Gibson, 1990 (Heteronemertea, Nemertea) using Illumina sequencing technology. The circular mitogenome was 16,358 bp in length and comprised 22 transfer RNA genes, 13 protein-coding genes, and two ribosomal RNA genes. Its overall base composition included 20.82% A, 41.06% T, 26.68% G, and 11.44% C; in fact, the mitogenome had a high A + T content of 61.88%. Furthermore, our phylogenetic analysis demonstrated that Paleonemertea, Pilidiophora, and Hoplonemertea were monophyletic groups, and <i>Q. sinicus</i> was most closely related to <i>Iwatanemertes piperata</i>.Mitochondrial DNA. Part B, Resources1749-1751https://www.ebi.ac.uk/biostudies/studies/S-EPMC9542323biostudies-literatureCharacterization of the complete mitochondrial genome of <i>Quasilineus sinicus</i> Gibson, 1990 (Nemertea: Heteronemertea) and its phylogenetic implications.PMC9542323Xue WPang CFu CShen CYAlireza AMao XHan JChen HfalseCharacterization of the complete mitochondrial genome of <i>Quasilineus sinicus</i> Gibson, 1990 (Nemertea: Heteronemertea) and its phylogenetic implications.In this study, we sequenced and characterized the complete mitochondrial genome (mitogenome) of <i>Quasilineus sinicus</i> Gibson, 1990 (Heteronemertea, Nemertea) using Illumina sequencing technology. The circular mitogenome was 16,358 bp in length and comprised 22 transfer RNA genes, 13 protein-coding genes, and two ribosomal RNA genes. Its overall base composition included 20.82% A, 41.06% T, 26.68% G, and 11.44% C; in fact, the mitogenome had a high A + T content of 61.88%. Furthermore, our phylogenetic analysis demonstrated that Paleonemertea, Pilidiophora, and Hoplonemertea were monophyletic groups, and <i>Q. sinicus</i> was most closely related to <i>Iwatanemertes piperata</i>.2022-01-01T00:00:00Z20222025-05-29T16:10:29.44Z2025-04-07T12:25:53.883ZS-EPMC95423233621386610.1080/23802359.2022.2126287