In this study, the total mitochondrial genome of Sarcocheilichthys sinensis sinensis (Cypriniformes: Cyprinidae) was firstly determined. The genome is 16,683 bases in length. It consists of 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and 2 non-coding regions. The overall nucleotide composition of the H-strand of S. sinensis sinensis mitochondrial genome is A: 30.48%, G: 16.65%, T: 26.30% and C: 26.58%, respectively, with an A + T rich feature (56.78%). These results provide useful data to further study of the molecular systematics, species identification and conservation genetics.
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http://dx.doi.org/10.3109/19401736.2013.796461 | DOI Listing |
Evol Appl
January 2025
Save Our Seas Foundation Shark Research Center, Halmos College of Arts & Sciences Nova Southeastern University Dania Florida USA.
Large-bodied pelagic sharks are key regulators of oceanic ecosystem stability, but highly impacted by severe overfishing. One such species, the shortfin mako shark (), a globally widespread, highly migratory predator, has undergone dramatic population reductions and is now Endangered (IUCN Red List), with Atlantic Ocean mako sharks in particular assessed by fishery managers as overfished and in need of urgent, improved management attention. Genomic-scale population assessments for this apex predator species have not been previously available to inform management planning; thus, we investigated the population genetics of mako sharks across the Atlantic using a bi-organelle genomics approach.
View Article and Find Full Text PDFJ Med Genet
January 2025
Division of Clinical and Metabolic Genetics, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
Biallelic pathogenic variants in cause a fatal autosomal recessive multisystem disorder characterized by recurrent autoinflammation, hypomyelination, progressive neurodegeneration, microcephaly, failure to thrive, liver dysfunction, respiratory chain defects and accumulation of glycogen in skeletal muscle. No missense variants in have been reported to date.We report a 6-year-old boy with microcephaly, global developmental delays, lower limb spasticity with hyperreflexia, epilepsy, abnormal brain MRI, failure to thrive, recurrent fevers and transaminitis.
View Article and Find Full Text PDFForensic Sci Int Genet
January 2025
Department of Genetics, Genomics & Cancer Sciences, University of Leicester, University Road, Leicester, UK. Electronic address:
Kinship determination is a valuable tool in forensic genetics, with applications including familial searching, disaster victim identification, and investigative genetic genealogy. Conventional typing of small numbers of autosomal short tandem repeats (STRs) confidently identifies only first-degree relatives. Massively parallel sequencing (MPS) can access more STRs and resolve alleles identical by length but differing in sequence (isoalleles), which may increase the power of kinship estimation, particularly when combined with additional sequenced single nucleotide polymorphism (SNP) loci, as in the ForenSeq DNA Signature Prep kit.
View Article and Find Full Text PDFDNA Repair (Amst)
January 2025
Departments of Genetics, Cytology and Bioengineering, Voronezh State University, Voronezh, Russia.
Mitochondrial DNA (mtDNA) is often more susceptible to damage compared to nuclear DNA. This is due to its localization in the mitochondrial matrix, where a large portion of reactive oxygen species are produced. Mitochondria do not have histones and mtDNA is only slightly protected by histone-like proteins and is believed to have less efficient repair mechanisms.
View Article and Find Full Text PDFGenome Biol Evol
January 2025
Department of Molecular and Cell Biology, University of California-Merced, Merced, CA 95343.
Eukaryotic genome size varies considerably, even among closely related species. The causes of this variation are unclear, but weak selection against supposedly costly "extra" genomic sequences has been central to the debate for over 50 years. The mutational hazard hypothesis, which focuses on the increased mutation rate to null alleles in superfluous sequences, is particularly influential, though challenging to test.
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