Abstract

The complete mitochondrial genome sequence of Larus relictus was 16,586-bp long, containing 13 protein-coding genes (PCGs), 22 tRNA genes, 2 rRNA genes, and a control region. Most PCGs begin with the typical ATN start codon with the exception of COI and ND5 genes, which use GTG as the initiation codon. Stop codons AGG, TAG, TAA and AGA are present in the PCGs; exceptions are COIII and ND4, which possess incomplete termination codons (T), and ND3, in which one extra C nucleotide is found. Secondary structure prediction of the 22 tRNA genes revealed the absence of the DHU arm in tRNASer(AGN). Seven conserved sequence box elements, as well as the origin of H-strand replication (OH) and bidirectional light- and heavy-strand transcription promoters (LSP/HSP), are found in control region.

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