{"doi":"10.3389/fgene.2014.00381","title":"Mappability and read length","abstract":null,"journal":"Frontiers in Genetics","year":2014,"id":635562,"datarank":0.62147020895873,"base_score":4.143134726391533,"endowment":4.143134726391533,"self_citation_contribution":0.62147020895873,"citation_network_contribution":0.0,"self_endowment_contribution":0.62147020895873,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":62,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"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":1202812,"name":"Jan Freudenberg","orcid":"0000-0002-5138-6017","position":1,"is_corresponding":false},{"id":600976,"name":"Wentian Li","orcid":"0000-0003-1155-110X","position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Mappability and read length","abstract":"Power-law distributions are the main functional form for the distribution of repeat size and repeat copy number in the human genome. When the genome is broken into fragments for sequencing, the limited size of fragments and reads may prevent an unique alignment of repeat sequences to the reference sequence. Repeats in the human genome can be as long as 10(4) bases, or 10(5) - 10(6) bases when allowing for mismatches between repeat units. Sequence reads from these regions are therefore unmappable when the read length is in the range of 10(3) bases. With a read length of 1000 bases, slightly more than 1% of the assembled genome, and slightly less than 1% of the 1 kb reads, are unmappable, excluding the unassembled portion of the human genome (8% in GRCh37/hg19). The slow decay (long tail) of the power-law function implies a diminishing return in converting unmappable regions/reads to become mappable with the increase of the read length, with the understanding that increasing read length will always move toward the direction of 100% mappability.","is_dataset_classified":null,"base_score":4.143134726391533,"endowment":4.143134726391533,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"25426137","pmcid":"PMC4226227","openalex_id":"https://openalex.org/W2007213224","authors":[],"funders":[{"funder_name":"NIAMS NIH HHS","grant_id":"R03 AR063340","title":null}],"total_grants":1,"fwci":0.78,"citation_percentile":0.69526423,"influential_citations":0,"citation_trend":[{"year":2015,"count":1},{"year":2016,"count":3},{"year":2017,"count":2},{"year":2018,"count":7},{"year":2019,"count":6},{"year":2020,"count":5},{"year":2021,"count":8},{"year":2022,"count":8},{"year":2023,"count":3},{"year":2024,"count":13},{"year":2025,"count":6}],"oa_status":"gold","license":"cc-by","oa_locations":[{"url":"https://www.frontiersin.org/articles/10.3389/fgene.2014.00381/pdf","host_type":"journal"},{"url":"https://www.frontiersin.org/articles/10.3389/fgene.2014.00381/pdf","host_type":"publisher"},{"url":"https://doi.org/10.3389/fgene.2014.00381","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/25426137","host_type":"repository"},{"url":"https://doaj.org/article/41dc01250a904de4987048ba1f18ba41","host_type":"repository"},{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/4226227","host_type":"repository"},{"url":"https://europepmc.org/articles/PMC4226227","host_type":"Europe_PMC"},{"url":"https://europepmc.org/articles/PMC4226227?pdf=render","host_type":"Europe_PMC"}],"fields_of_study":["RNA and protein synthesis mechanisms","Genomics and Phylogenetic Studies","Chromosomal and Genetic Variations"],"mesh_terms":[],"keywords":["Genome","Human genome","Sequence (biology)","Biology","Computational biology","Genetics","Genome size","Gene","Repeats","Next-generation Sequencing","Copy Number Variations","Power-law Distribution","Mappability"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Peace, Justice and strong institutions"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-06T15:17:23.824863Z","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":[]}