Journal
NEW JOURNAL OF CHEMISTRY
Volume 32, Issue 8, Pages 1346-1353Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b805406c
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In this contribution the formation of bioinorganic assemblies between the basic globular protein lysozyme and aqueous aluminium species including Al-13-mer, Al-30-mer and colloidal aluminium hydroxide have been explored and comparison made to previous interaction studies performed with bovine serum albumin (BSA). Specific charge-stabilised bioinorganic assemblies involving aluminium species and lysozyme were observed to form in contrast to the gel like structures formed oil interaction of BSA with aluminium species. As demonstrated by infrared spectroscopy (structural assignment, 2D correlation spectroscopy), interactions mostly involve acidic surface groups of the proteins (Asp, Glu). with strong complexation and deprotonation in the case of BSA interacting with Al-13 and Al-30 and through hydrogen bonding for lysozyme interacting with the same species and aluminium hydroxide particles interacting with both biomolecules.
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