+検索条件
-Structure paper
タイトル | Structural Insight Into a Human H Ferritin@Gold-Monocarbene Adduct: Aurophilicity Revealed in a Biological Context. |
---|---|
ジャーナル・号・ページ | Angew Chem Int Ed Engl, Page e202503778, Year 2025 |
掲載日 | 2025年4月18日 |
![]() | Lucrezia Cosottini / Andrea Giachetti / Annalisa Guerri / Ane Martinez-Castillo / Andrea Geri / Stefano Zineddu / Nicola G A Abrescia / Luigi Messori / Paola Turano / Antonio Rosato / ![]() ![]() |
PubMed 要旨 | Human H ferritin (HuHf) has excellent potential as a nanocarrier for the selective delivery of anticancer metal-based drugs to tumor cells. Here, we addressed the interaction of the gold monocarbene ...Human H ferritin (HuHf) has excellent potential as a nanocarrier for the selective delivery of anticancer metal-based drugs to tumor cells. Here, we addressed the interaction of the gold monocarbene compound Au(NHC)Cl with HuHf by electrospray ionization-mass spectrometry (ESI-MS) measurements, which provide the metalation state of the protein subunits and demonstrate the involvement of protein cysteines in gold binding. The adduct between Au(NHC)Cl and HuHf was studied by cryo-EM measurements, resulting in a high-resolution 3D density map at 1.51 Å. The cryo-EM structure shows a novel tetranuclear gold(I) cluster, located in a surface pocket of each subunit where it is bound to Cys90 and Cys102. The short inter-metal distances are diagnostic of the occurrence of aurophilic interactions. The present work demonstrates the usefulness of cryo-EM to investigate the interactions between metal-based drugs and their protein targets/carriers, also leveraging the strong signal of transition metal ions. |
![]() | ![]() ![]() |
手法 | EM (単粒子) |
解像度 | 1.51 Å |
構造データ | EMDB-52339, PDB-9hq6: |
化合物 | ![]() ChemComp-BM0: ![]() ChemComp-AU: ![]() ChemComp-HOH: |
由来 |
|
![]() | METAL BINDING PROTEIN / Iron / Gold / Metal transport / Metal storage / Anticancer drugs / Drug nanocarrier |