Institute for Microelectronics and Microsystems - Unit of Naples

Vi aspettiamo, dal 21 al 24 novembre, a Città della Scienza per l'edizione 2019 di Futuro Remoto! L'IMM c'è!

L'IMM a Futuro Remoto 2019! L'Istituto per la Microelettronica e i Microsistemi di Napoli vi attende, dal 21 al 24 novembre, a Città della Scienza per l'edizione 2019 di Futuro Remoto!

"Amplificare e rendere macroscopico un fenomeno fondamentale della luce, il momento angolare intrinseco dei fotoni trasversale rispetto al flusso che ne determina il verso specifico. Questo l’obiettivo raggiunto da una ricerca in collaborazione tra l’Istituto per la microelettronica e i microsistemi e l’Istituto di biochimica e biologia cellulare del Cnr e Molecular Foundry di Berkeley, grazie a un innovativo dispositivo. Lo studio, pubblicato sulla rivista Optica, apre prospettive dalla medicina all’elettronica, dove le tecnologie che sfruttano i fotoni, grazie alla loro maggiore capacità ed efficienza, potrebbero sostituire i dispositivi elettronici".

Prima osservazione dello spin-Hall quantistico: come veicolare la luce Amplificare e rendere macroscopico un fenomeno fondamentale della luce, il momento angolare intrinseco dei fotoni trasversale rispetto al flusso che ne determina il verso specifico. Questo l’obiettivo raggiunto da una ricerca in collaborazione tra l’Istituto per la microelettronica e i microsist...

Congratulations to Paola Cicatiello, Ilaria Stanzione, Principia Dardano, Luca De Stefano, Leila Birolo, Addolorata De Chiaro, Daria Maria Monti, Ganna Petruk, Gerardino D’Errico, and Paola Giardina for their last paper on International Journal of Molecular Sciences, "Characterization of a Surface-Active Protein Extracted from a Marine Strain of Penicillium chrysogenum"!

Marine microorganisms represent a reservoir of new promising secondary metabolites. Surface-active proteins with good emulsification activity can be isolated from fungal species that inhabit the marine environment and can be promising candidates for different biotechnological applications. In this study a novel surface-active protein, named Sap-Pc, was purified from a marine strain of Penicillium chrysogenum. The effect of salt concentration and temperature on protein production was analyzed, and a purification method was set up. The purified protein, identified as Pc13g06930, was annotated as a hypothetical protein. It was able to form emulsions, which were stable for at least one month, with an emulsification index comparable to that of other known surface-active proteins. The surface tension reduction was analyzed as function of protein concentration and a critical micellar concentration of 2 μM was determined. At neutral or alkaline pH, secondary structure changes were monitored over time, concurrently with the appearance of protein precipitation. Formation of amyloid-like fibrils of SAP-Pc was demonstrated by spectroscopic and microscopic analyses. Moreover, the effect of protein concentration, a parameter affecting kinetics of fibril formation, was investigated and an on-pathway involvement of micellar aggregates during the fibril formation process was suggested.

Characterization of a Surface-Active Protein Extracted from a Marine Strain of Penicillium chrysogenum Marine microorganisms represent a reservoir of new promising secondary metabolites. Surface-active proteins with good emulsification activity can be isolated from fungal species that inhabit the marine environment and can be promising candidates for different biotechnological applications. In this s...