{"doi":"10.1016/0300-9084(91)90109-e","title":"DNA binding properties of the LexA repressor","abstract":null,"journal":"Biochimie","year":1991,"id":630460,"datarank":0.7091081728068512,"base_score":4.727387818712341,"endowment":4.727387818712341,"self_citation_contribution":0.7091081728068512,"citation_network_contribution":0.0,"self_endowment_contribution":0.7091081728068512,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":112,"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":1633301,"name":"P. Oertel-Buchheit","orcid":null,"position":1,"is_corresponding":false},{"id":1633302,"name":"M. Kazmaier","orcid":null,"position":2,"is_corresponding":false},{"id":1633303,"name":"M. Granger-Schnarr","orcid":null,"position":3,"is_corresponding":false},{"id":1633300,"name":"M. Schnarr","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"DNA binding properties of the LexA repressor","abstract":"The LexA repressor from Escherichia coli negatively regulates the transcription of about 20 different genes upon binding with variable affinity to single-, double- or even triple-operators as in the case of the recN gene. Binding of LexA to multiple operators is cooperative if the spacing between these operators is favorable. LexA recognizes DNA via its amino-terminal domain. The three-dimensional structure of this domain has been determined by NMR measurements. It contains three alpha-helices spanning residues 8-20, 28-35 and 41-54. In view of this structure, but also according to homology considerations and the unusual contact pattern with the DNA backbone, the LexA repressor is not a normal helix-turn-helix DNA binding protein like for example phage lambda repressor. LexA is at best a distant relative of this class of transcription factors and should probably be considered as a protein that contains a new DNA binding motif. A cluster of LexA mutant repressors deficient in DNA binding falling into the third helix (residues 41-54 bp) suggests that this helix is involved in DNA recognition.","is_dataset_classified":null,"base_score":4.727387818712341,"endowment":4.727387818712341,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"1911942","pmcid":null,"openalex_id":"https://openalex.org/W2083354279","authors":[],"funders":[],"total_grants":0,"fwci":3.5137,"citation_percentile":0.93028743,"influential_citations":0,"citation_trend":[{"year":2012,"count":1},{"year":2013,"count":1},{"year":2014,"count":2},{"year":2015,"count":1},{"year":2016,"count":3},{"year":2017,"count":1},{"year":2018,"count":2},{"year":2019,"count":2},{"year":2020,"count":3},{"year":2022,"count":3},{"year":2023,"count":2},{"year":2024,"count":4},{"year":2025,"count":2},{"year":2026,"count":1}],"oa_status":"closed","license":"https://www.elsevier.com/tdm/userlicense/1.0/","oa_locations":[{"url":"https://api.elsevier.com/content/article/PII:030090849190109E?httpAccept=text/xml","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:030090849190109E?httpAccept=text/plain","host_type":"publisher"},{"url":"https://doi.org/10.1016/0300-9084(91)90109-e","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/1911942","host_type":"repository"}],"fields_of_study":["Bacterial Genetics and Biotechnology","DNA and Nucleic Acid Chemistry","Bacteriophages and microbial interactions","Amino Acid Sequence","Bacterial Proteins","Base Sequence","DNA, Bacterial","DNA-Binding Proteins","Molecular Sequence Data","Repressor Proteins","Serine Endopeptidases","LexA Repressor Protein"],"mesh_terms":["LexA Repressor Protein","Amino Acid Sequence","Bacterial Proteins","Base Sequence","DNA-Binding Proteins","DNA, Bacterial","Molecular Sequence Data","Repressor Proteins","Serine Endopeptidases"],"keywords":["Repressor lexA","Repressor","DNA","DNA-binding domain","Biology","YY1","DNA-binding protein","Helix-turn-helix","Genetics","GATAD2B","Gene","Mutant","SOS response","DNA binding site","Binding site","HMG-box","Transcription factor","Promoter","Gene expression"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-05T21:21:14.794746Z","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":[]}