{"doi":"10.2144/000113222","title":"Using ΦX174 DNA as an Exogenous Reference for Measuring Mitochondrial DNA Copy Number","abstract":null,"journal":"BioTechniques","year":2009,"id":46974,"datarank":1.3372289149176573,"base_score":2.8903717578961645,"endowment":2.8903717578961645,"self_citation_contribution":0.4335557636844247,"citation_network_contribution":0.9036731512332327,"self_endowment_contribution":0.4335557636844247,"citer_contribution":0.9036731512332327,"corpus_percentile":null,"corpus_rank":null,"citation_count":17,"citer_count":16,"citers_with_citation_signal":15,"citers_with_endowment":15,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":186801,"name":"Roberta A. Mittelstaedt","orcid":null,"position":1,"is_corresponding":false},{"id":189490,"name":"Robert H. Heflich","orcid":null,"position":2,"is_corresponding":false},{"id":217100,"name":"Meagan B. Myers","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Using ΦX174 DNA as an Exogenous Reference for Measuring Mitochondrial DNA Copy Number","abstract":"Quantitative real-time PCR has become a popular method to analyze and quantify changes in the copy number of mitochondrial DNA (mtDNA), and nuclear DNA (nDNA) is often used as an endogenous reference for mtDNA abundance. In our experience, using nDNA as a reference is problematic, due to differences in the extraction efficiency of nDNA and mtDNA and variation in the ploidy of experimental samples. Here, we report that the ratio of mtDNA to nDNA varies in repeated DNA extractions but that PhiX174 DNA, added before DNA extraction, is extracted with a similar efficiency to mtDNA, making it a suitable alternative reference for quantifying mtDNA copy number.","is_dataset_classified":null,"base_score":2.8903717578961645,"endowment":2.8903717578961645,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"19852770","pmcid":null,"openalex_id":"https://openalex.org/W203236916","authors":[],"funders":[{"funder_name":"the National Center for Toxicological Research/Food and Drug Administration and National Institute for Environmental Health Sciences/National Toxicology Program","grant_id":"224-07-0007","title":null}],"total_grants":1,"fwci":0.6751,"citation_percentile":0.67816384,"influential_citations":0,"citation_trend":[{"year":2012,"count":3},{"year":2013,"count":1},{"year":2015,"count":3},{"year":2016,"count":1},{"year":2018,"count":1},{"year":2020,"count":1},{"year":2021,"count":1},{"year":2022,"count":1},{"year":2023,"count":2},{"year":2025,"count":1}],"oa_status":"gold","license":"cc-by","oa_locations":[{"url":"https://doi.org/10.2144/000113222","host_type":"journal"},{"url":"https://doi.org/10.2144/000113222","host_type":"GOLD"},{"url":"https://doi.org/10.2144/000113222","host_type":"publisher"},{"url":"https://www.tandfonline.com/doi/pdf/10.2144/000113222","host_type":"publisher"},{"url":"https://pubmed.ncbi.nlm.nih.gov/19852770","host_type":"repository"},{"url":"https://doaj.org/article/d503d29c47694cd781bf429156fafb1f","host_type":"repository"}],"fields_of_study":["Molecular Biology Techniques and Applications","Metabolism and Genetic Disorders","Isotope Analysis in Ecology","Biology","Medicine","Animals","Bacteriophage phi X 174","DNA, Mitochondrial","DNA, Viral","Gene Dosage","Humans","Mitochondria","Polymerase Chain Reaction","Reference Standards"],"mesh_terms":["Animals","DNA, Mitochondrial","DNA, Viral","Humans","Mitochondria","Bacteriophage phi X 174","Reference Standards","Polymerase Chain Reaction","Gene Dosage"],"keywords":["Mitochondrial DNA","Nuclear DNA","Biology","DNA","Low copy number","DNA extraction","Molecular biology","Real-time polymerase chain reaction","Genetics","Copy-number variation","Polymerase chain reaction","Genome","Gene","Plasmid"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-07-15T02:48:51.781020Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}