{"doi":"10.1016/j.jsb.2019.02.001","title":"Crystal structures of aminotransferases Aro8 and Aro9 from Candida albicans and structural insights into their properties","abstract":null,"journal":"Journal of Structural Biology","year":2019,"id":657863,"datarank":0.3873593569831003,"base_score":1.791759469228055,"endowment":1.791759469228055,"self_citation_contribution":0.26876392038420827,"citation_network_contribution":0.11859543659889202,"self_endowment_contribution":0.26876392038420827,"citer_contribution":0.11859543659889202,"corpus_percentile":null,"corpus_rank":null,"citation_count":5,"citer_count":5,"citers_with_citation_signal":4,"citers_with_endowment":4,"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":212377,"name":"Wojciech Rypniewski","orcid":null,"position":1,"is_corresponding":false},{"id":1717318,"name":"Kamila Rząd","orcid":null,"position":2,"is_corresponding":false},{"id":1717319,"name":"Sławomir Milewski","orcid":null,"position":3,"is_corresponding":false},{"id":1717320,"name":"Iwona Gabriel","orcid":null,"position":4,"is_corresponding":false},{"id":212378,"name":"Agnieszka Kiliszek","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Crystal structures of aminotransferases Aro8 and Aro9 from Candida albicans and structural insights into their properties","abstract":"Aminotransferases catalyze reversibly the transamination reaction by a ping-pong bi-bi mechanism with pyridoxal 5'-phosphate (PLP) as a cofactor. Various aminotransferases acting on a range of substrates have been reported. Aromatic transaminases are able to catalyze the transamination reaction with both aromatic and acidic substrates. Two aminotransferases from C. albicans, Aro8p and Aro9p, have been identified recently, exhibiting different catalytic properties. To elucidate the multiple substrate recognition of the two enzymes we determined the crystal structures of an unliganded CaAro8p, a complex of CaAro8p with the PLP cofactor bound to a substrate, forming an external aldimine, CaAro9p with PLP in the form of internal aldimine, and CaAro9p with a mixture of ligands that have been interpreted as results of the enzymatic reaction. The crystal structures of both enzymes contains in the asymmetric unit a biologically relevant dimer of 55 kDa for CaAro8 and 59 kDa for CaAro9p protein subunits. The ability of the enzymes to process multiple substrates could be related to a feature of their architecture in which the active site resides on one subunit while the substrate-binding site is formed by a long loop extending from the other subunit of the dimeric molecule. The separation of the two functions to different chemical entities could facilitate the evolution of the substrate-binding part and allow it to be flexible without destabilizing the conservative catalytic mechanism.","is_dataset_classified":null,"base_score":1.791759469228055,"endowment":1.791759469228055,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"30742897","pmcid":null,"openalex_id":"https://openalex.org/W2912245893","authors":[],"funders":[{"funder_name":"National Science Centre","grant_id":"2015/17/B/NZ6/04248","title":null},{"funder_name":"Helmholtz-Zentrum Berlin","grant_id":"","title":null}],"total_grants":2,"fwci":0.2432,"citation_percentile":0.41659631,"influential_citations":0,"citation_trend":[{"year":2019,"count":1},{"year":2021,"count":2},{"year":2023,"count":1},{"year":2025,"count":1}],"oa_status":"hybrid","license":"cc-by","oa_locations":[{"url":"https://www.sciencedirect.com/science/article/pii/S1047847719300139/pdf","host_type":"journal"},{"url":"https://www.sciencedirect.com/science/article/pii/S1047847719300139/pdf","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:S1047847719300139?httpAccept=text/xml","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:S1047847719300139?httpAccept=text/plain","host_type":"publisher"},{"url":"https://doi.org/10.1016/j.jsb.2019.02.001","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/30742897","host_type":"repository"},{"url":"https://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=99028","host_type":"repository"}],"fields_of_study":["Enzyme Structure and Function","Bacterial Genetics and Biotechnology","Biochemical and Molecular Research"],"mesh_terms":["Protein Conformation, alpha-Helical","Protein Conformation, beta-Strand","Amino Acid Sequence","Transaminases","Candida albicans","Cloning, Molecular","Coenzymes","Escherichia coli","Fungal Proteins","Genetic Vectors","Isoenzymes","Kinetics","Ligands","Models, Molecular","Protein Binding","Pyridoxal Phosphate","Recombinant Proteins","Substrate Specificity","Gene Expression","Sequence Alignment","Sequence Homology, Amino Acid","Crystallography, X-Ray","Catalytic Domain","Protein Interaction Domains and Motifs","Protein Multimerization"],"keywords":["Transamination","Cofactor","Stereochemistry","Dimer","Aldimine","Chemistry","Active site","Transferase","Lyase","Protein subunit","Pyridoxal","Enzyme","Substrate (aquarium)","Catalysis","Catalytic cycle","Biochemistry","Biology","Organic chemistry","Crystal structure","X-ray crystallography","aminotransferase","Pyridoxal-5′-phosphate","Multi-substrate Enzyme"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-12T02:35:16.407014Z","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":[]}