{"id":"https://openalex.org/W2050754145","doi":"https://doi.org/10.1073/pnas.93.13.6437","title":"The crystal structure of the immunity protein of colicin E7 suggests a possible colicin-interacting surface.","display_name":"The crystal structure of the immunity protein of colicin E7 suggests a possible colicin-interacting surface.","publication_year":1996,"publication_date":"1996-06-25","ids":{"openalex":"https://openalex.org/W2050754145","doi":"https://doi.org/10.1073/pnas.93.13.6437","mag":"2050754145","pmid":"https://pubmed.ncbi.nlm.nih.gov/8692833","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/39041"},"language":"en","primary_location":{"id":"doi:10.1073/pnas.93.13.6437","doi":"https://doi.org/10.1073/pnas.93.13.6437","is_oa":false,"landing_page_url":"https://doi.org/10.1073/pnas.93.13.6437","pdf_url":null,"source":{"id":"https://openalex.org/S125754415","display_name":"Proceedings of the National Academy of Sciences","issn_l":"0027-8424","issn":["0027-8424","1091-6490"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320052","host_organization_name":"National Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310320052"],"host_organization_lineage_names":["National Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC39041/","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5111911235","display_name":"Kin\u2010Fu Chak","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4387156312","display_name":"National Yang Ming University","ror":"https://ror.org/009h5ks85","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613","https://openalex.org/I4387156312"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"K F Chak","raw_affiliation_strings":["Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China","institution_ids":["https://openalex.org/I4387156312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028033960","display_name":"Martin K. Safo","orcid":"https://orcid.org/0000-0002-9536-1743","observed_orcids":["https://orcid.org/0000-0002-9536-1743"]},"institutions":[{"id":"https://openalex.org/I4387156312","display_name":"National Yang Ming University","ror":"https://ror.org/009h5ks85","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613","https://openalex.org/I4387156312"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"M K Safo","raw_affiliation_strings":["Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China","institution_ids":["https://openalex.org/I4387156312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048799494","display_name":"W.-Y. Ku","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4387156312","display_name":"National Yang Ming University","ror":"https://ror.org/009h5ks85","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613","https://openalex.org/I4387156312"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"W Y Ku","raw_affiliation_strings":["Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China","institution_ids":["https://openalex.org/I4387156312"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078448162","display_name":"Sen\u2010Yung Hsieh","orcid":"https://orcid.org/0000-0002-1723-7261","observed_orcids":["https://orcid.org/0000-0002-1723-7261"]},"institutions":[{"id":"https://openalex.org/I4387156312","display_name":"National Yang Ming University","ror":"https://ror.org/009h5ks85","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613","https://openalex.org/I4387156312"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"S Y Hsieh","raw_affiliation_strings":["Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China","institution_ids":["https://openalex.org/I4387156312"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5051508882","display_name":"Hanna S. Yuan","orcid":"https://orcid.org/0000-0001-9671-6967","observed_orcids":["https://orcid.org/0000-0001-9671-6967"]},"institutions":[{"id":"https://openalex.org/I4387156312","display_name":"National Yang Ming University","ror":"https://ror.org/009h5ks85","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613","https://openalex.org/I4387156312"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"H S Yuan","raw_affiliation_strings":["Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Biochemistry, National Yang-Ming University, Taipei, Taiwan, Republic of China","institution_ids":["https://openalex.org/I4387156312"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4387156312"],"apc_list":null,"apc_paid":null,"fwci":2.6637,"has_fulltext":false,"cited_by_count":58,"citation_normalized_percentile":{"value":0.89818402,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"93","issue":"13","first_page":"6437","last_page":"6442"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10120","display_name":"Bacterial Genetics and Biotechnology","score":0.635699987411499,"subfield":{"id":"https://openalex.org/subfields/1311","display_name":"Genetics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10120","display_name":"Bacterial Genetics and Biotechnology","score":0.635699987411499,"subfield":{"id":"https://openalex.org/subfields/1311","display_name":"Genetics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11162","display_name":"Enzyme Structure and Function","score":0.16410000622272491,"subfield":{"id":"https://openalex.org/subfields/1315","display_name":"Structural Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11103","display_name":"Antimicrobial Peptides and Activities","score":0.13130000233650208,"subfield":{"id":"https://openalex.org/subfields/2404","display_name":"Microbiology"},"field":{"id":"https://openalex.org/fields/24","display_name":"Immunology and Microbiology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/colicin-e7","display_name":"colicin E7","score":0.9449999928474426},{"id":"https://openalex.org/keywords/protein-crystal-structure","display_name":"protein crystal structure","score":0.6679999828338623},{"id":"https://openalex.org/keywords/four-helix-bundle","display_name":"four-helix bundle","score":0.8569999933242798}],"concepts":[{"id":"https://openalex.org/C168707992","wikidata":"https://www.wikidata.org/wiki/Q15439223","display_name":"Colicin","level":4,"score":0.9939407110214233},{"id":"https://openalex.org/C142089489","wikidata":"https://www.wikidata.org/wiki/Q1053976","display_name":"Antiparallel (mathematics)","level":3,"score":0.6300040483474731},{"id":"https://openalex.org/C47701112","wikidata":"https://www.wikidata.org/wiki/Q735188","display_name":"Protein structure","level":2,"score":0.5248948335647583},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.5162672996520996},{"id":"https://openalex.org/C2779341262","wikidata":"https://www.wikidata.org/wiki/Q182581","display_name":"Immunity","level":3,"score":0.4909415543079376},{"id":"https://openalex.org/C178180057","wikidata":"https://www.wikidata.org/wiki/Q7251477","display_name":"Protein superfamily","level":3,"score":0.43304020166397095},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.32396215200424194},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.31521618366241455},{"id":"https://openalex.org/C547475151","wikidata":"https://www.wikidata.org/wiki/Q25419","display_name":"Escherichia coli","level":3,"score":0.2467532753944397},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.2241133451461792},{"id":"https://openalex.org/C8891405","wikidata":"https://www.wikidata.org/wiki/Q1059","display_name":"Immune system","level":2,"score":0.18592584133148193},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0936957597732544},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.08976638317108154},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.0}],"mesh":[{"descriptor_ui":"D000595","descriptor_name":"Amino Acid Sequence","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001426","descriptor_name":"Bacterial Proteins","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":true},{"descriptor_ui":"D003087","descriptor_name":"Colicins","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":true},{"descriptor_ui":"D006860","descriptor_name":"Hydrogen Bonding","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008969","descriptor_name":"Molecular Sequence Data","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011487","descriptor_name":"Protein Conformation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017386","descriptor_name":"Sequence Homology, Amino Acid","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018360","descriptor_name":"Crystallography, X-Ray","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D029968","descriptor_name":"Escherichia coli Proteins","qualifier_ui":"Q000737","qualifier_name":"chemistry","is_major_topic":true}],"locations_count":3,"locations":[{"id":"doi:10.1073/pnas.93.13.6437","doi":"https://doi.org/10.1073/pnas.93.13.6437","is_oa":false,"landing_page_url":"https://doi.org/10.1073/pnas.93.13.6437","pdf_url":null,"source":{"id":"https://openalex.org/S125754415","display_name":"Proceedings of the National Academy of Sciences","issn_l":"0027-8424","issn":["0027-8424","1091-6490"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-a","doyens","erih-plus","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320052","host_organization_name":"National Academy of Sciences","host_organization_lineage":["https://openalex.org/P4310320052"],"host_organization_lineage_names":["National Academy of Sciences"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences","raw_type":"journal-article"},{"id":"pmid:8692833","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/8692833","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the National Academy of Sciences of the United States of America","raw_type":"Journal Article"},{"id":"pmh:oai:pubmedcentral.nih.gov:39041","doi":null,"is_oa":true,"landing_page_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC39041/","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proc Natl Acad Sci U S A","raw_type":"Text"}],"best_oa_location":{"id":"pmh:oai:pubmedcentral.nih.gov:39041","doi":null,"is_oa":true,"landing_page_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC39041/","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proc Natl Acad Sci U S A","raw_type":"Text"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":24,"referenced_works":["https://openalex.org/W656827624","https://openalex.org/W1519919602","https://openalex.org/W1549965835","https://openalex.org/W1923728284","https://openalex.org/W1996351631","https://openalex.org/W1998846905","https://openalex.org/W2007829111","https://openalex.org/W2018808204","https://openalex.org/W2025895477","https://openalex.org/W2034190103","https://openalex.org/W2039586626","https://openalex.org/W2043551165","https://openalex.org/W2059701606","https://openalex.org/W2061227491","https://openalex.org/W2084948886","https://openalex.org/W2090541786","https://openalex.org/W2092240717","https://openalex.org/W2093645451","https://openalex.org/W2132670203","https://openalex.org/W2141235024","https://openalex.org/W2157727613","https://openalex.org/W2162280255","https://openalex.org/W2419057507","https://openalex.org/W4246356731"],"related_works":["https://openalex.org/W7098354589","https://openalex.org/W2049966753","https://openalex.org/W1859414330","https://openalex.org/W2074360164","https://openalex.org/W1991633284","https://openalex.org/W2327615533","https://openalex.org/W2010143056","https://openalex.org/W2072186534","https://openalex.org/W2061922642","https://openalex.org/W2012667720"],"abstract_inverted_index":{"The":[0,45],"immunity":[1,43,87,116,136,156],"protein":[2,47,137],"of":[3,27,41,49,61,85,157],"colicin":[4,13,42,132],"E7":[5,14],"(ImmE7)":[6],"can":[7],"bind":[8],"specifically":[9],"to":[10,58,101,154],"the":[11,23,28,33,39,59,79,83,114,149,158],"DNase-type":[12,86,115],"and":[15,107,126,133],"inhibit":[16],"its":[17,134],"bactericidal":[18],"activity.":[19],"Here":[20],"we":[21,110],"report":[22],"1.8-angstrom":[24],"crystal":[25],"structure":[26,36],"ImmE7":[29,46],"protein.":[30],"This":[31,74],"is":[32,72,96],"first":[34],"x-ray":[35],"determined":[37],"in":[38,54,69,98],"superfamily":[40],"proteins.":[44],"consists":[48],"four":[50],"antiparallel":[51],"alpha-helices,":[52],"folded":[53],"a":[55,62,123,131],"topology":[56],"similar":[57],"architecture":[60],"four-helix":[63],"bundle":[64],"structure.":[65],"A":[66],"region":[67],"rich":[68],"acidic":[70],"residues":[71,146],"identified.":[73],"negatively":[75],"charged":[76,145],"area":[77,95],"has":[78],"greatest":[80],"variability":[81],"within":[82],"family":[84],"proteins;":[88],"thus,":[89],"it":[90],"seems":[91],"likely":[92],"that":[93,112,127],"this":[94],"involved":[97],"specific":[99,128,155],"binding":[100],"colicin.":[102,159],"Based":[103],"on":[104,148],"structural,":[105],"genetic,":[106],"kinetic":[108],"data,":[109],"suggest":[111],"all":[113],"proteins,":[117],"as":[118,120],"well":[119,141],"colicins,":[121],"share":[122],"\"homologous-structural":[124],"framework\"":[125],"interaction":[129,150],"between":[130],"cognate":[135],"relies":[138],"upon":[139],"how":[140],"these":[142],"two":[143],"proteins'":[144],"match":[147],"surface,":[151],"thus":[152],"leading":[153]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":4},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2016-06-24T00:00:00"}
