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9ex1

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X-ray structure of a polyoxidovanadate/lysozyme adduct obtained when the protein is treated with [VIVO(acac)2] in 1.1 M NaCl, 0.1 M sodium acetate at pH 4.0 (Structure B)

Structural highlights

9ex1 is a 1 chain structure with sequence from Gallus gallus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.785Å
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

LYSC_CHICK Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus.^[1]

Publication Abstract from PubMed

The high-resolution X-ray structures of the model protein lysozyme in the presence of the potential drug [VIVO(acetylacetonato)2] from crystals grown in 1.1 M NaCl, 0.1 M sodium acetate at pH 4.0 reveal the binding to the protein of different and unexpected mixed-valence cage-like polyoxidovanadates (POVs): [V15O36(OH2)]5-, which non-covalently interacts with the lysozyme surface, [V15O33(OH2)]+ and [V20O51(OH2)]n- (this latter based on an unusual V18O43 cage) which covalently bind the protein. EPR spectroscopy confirms the partial oxidation of VIV to VV and the formation of mixed-valence species. The results indicate that the interaction with proteins can stabilize the structure of unexpected - both for dimension and architecture - POVs, not observed in aqueous solution.

Non-Covalent and Covalent Binding of New Mixed-Valence Cage-like Polyoxidovanadate Clusters to Lysozyme.,Tito G, Ferraro G, Pisanu F, Garribba E, Merlino A Angew Chem Int Ed Engl. 2024 Jun 6:e202406669. doi: 10.1002/anie.202406669. PMID:38842919^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Maehashi K, Matano M, Irisawa T, Uchino M, Kashiwagi Y, Watanabe T. Molecular characterization of goose- and chicken-type lysozymes in emu (Dromaius novaehollandiae): evidence for extremely low lysozyme levels in emu egg white. Gene. 2012 Jan 15;492(1):244-9. doi: 10.1016/j.gene.2011.10.021. Epub 2011 Oct, 25. PMID:22044478 doi:10.1016/j.gene.2011.10.021
↑ Tito G, Ferraro G, Pisanu F, Garribba E, Merlino A. Non-Covalent and Covalent Binding of New Mixed-Valence Cage-like Polyoxidovanadate Clusters to Lysozyme. Angew Chem Int Ed Engl. 2024 Jun 6:e202406669. PMID:38842919 doi:10.1002/anie.202406669