{"title":"Cage Architecture and Reactivity are Preserved in Cysteine-Mutated Ferritin","authors":"Lucrezia Cosottini, Jacopo Buzzigoli, Paola Turano","doi":"10.1002/ejic.202400486","DOIUrl":null,"url":null,"abstract":"<p>The role of solvent-exposed cysteines as reactive sites for bioconjugation with a variety of metal drugs or fluorescent probes is emerging in the use of human H-ferritin (HuHf) as a nanocarrier for targeting various tumor cell lines. Here, we have investigated the role of these residues in controlling the structural stability and ferroxidase activity by analyzing the properties of three variants: C90A, C90AC102A, and C130A. Protein folding and cage assembly were unchanged. Ferroxidase activity was also unaffected, indicating that these cysteines are not involved in either the catalytic activity or the overall iron(II) uptake process. For comparison, activity measurements were also performed on two derivatives involving the solvent-exposed cysteine residues.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"27 35","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Inorganic Chemistry","FirstCategoryId":"1","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ejic.202400486","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The role of solvent-exposed cysteines as reactive sites for bioconjugation with a variety of metal drugs or fluorescent probes is emerging in the use of human H-ferritin (HuHf) as a nanocarrier for targeting various tumor cell lines. Here, we have investigated the role of these residues in controlling the structural stability and ferroxidase activity by analyzing the properties of three variants: C90A, C90AC102A, and C130A. Protein folding and cage assembly were unchanged. Ferroxidase activity was also unaffected, indicating that these cysteines are not involved in either the catalytic activity or the overall iron(II) uptake process. For comparison, activity measurements were also performed on two derivatives involving the solvent-exposed cysteine residues.
期刊介绍：
The European Journal of Inorganic Chemistry (2019 ISI Impact Factor: 2.529) publishes Full Papers, Communications, and Minireviews from the entire spectrum of inorganic, organometallic, bioinorganic, and solid-state chemistry. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies.
The following journals have been merged to form the two leading journals, European Journal of Inorganic Chemistry and European Journal of Organic Chemistry:
Chemische Berichte
Bulletin des Sociétés Chimiques Belges
Bulletin de la Société Chimique de France
Gazzetta Chimica Italiana
Recueil des Travaux Chimiques des Pays-Bas
Anales de Química
Chimika Chronika
Revista Portuguesa de Química
ACH—Models in Chemistry
Polish Journal of Chemistry
The European Journal of Inorganic Chemistry continues to keep you up-to-date with important inorganic chemistry research results.
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