Abstract

We present the complete mitochondrial genome of Protonibea diacanthus in this study. The mitochondrial genome is 16,535 bp in length, containing 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes and a control region. All of them are encoded on the heavy strand except ND6 and 8 tRNA genes on the light strand. The nucleotide compositions of the light strand are 31.09% of G, 27.54% of T, 25.34% of A and 16.03% of C. All the protein-coding genes start with ATG initiation codon except ATP6 with GTG, and 5 types of inferred termination codons are AGA (COXI and COXII), T (ND3, ND4, Cytb), TA (ND2, COXIII and ATP6), TAA (ND1, ATP8 and ND4L) and TAG (DN5 and ND6). There are 14 intergenic spacers and 7 gene overlaps. The tandem repeat sequence is observed in 12S-rRNA, 16S-rRNA, tRNATrp, tRNAAla, COXIII, ND4L and ND4 genes. Gene arrangement and distribution are consistent with the typical vertebrates.

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