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Updated: May 7, 2026

Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
Published on: February 10, 2023
The complete mitochondrial genome of Ircinia sp. (Dictyoceratida: Irciniidae)
Junye Ma1, Chunxiang Li, Yonghua Gai
1Department of Micropalaeontology, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences , Nanjing , P.R. China .
Abstract:
The mitochondrial genome of Ircinia sp. (Dictyoceratida: Irciniidae) is a circular molecule of 16,037 bp in length, containing 14 protein-coding genes, 2 ribosomal RNA genes, 2 transfer RNA genes (trnW and trnM) and 13 non-coding segments. All genes are distributed in the same strand (H-strand). The overall base composition of the H-strand is as follows: T (37.84%), C (11.22%), A (24.81%), G (26.13%), with GC- and AT-skew of 0.399 and -0.208, respectively, reflecting unbalanced base composition between the two strands. The non-coding regions are 1190 bp in total length, with high AT content (76.31%). The current mitochondrial genome is identical to that of sibling species I. strobilina in gene order and contents, but differs from the latter in the presence of two kinds of repetitive sequences in the non-coding regions, of which one could form repetitive hairpin-forming elements.
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