Stylianos Fodelianakis
Postdoctoral fellow
King Abdullah University of Science and Technology
Kingdom of Saudi Arabia
Title: "Disentangling the forces that shape bacterial communities: from the Red Sea depths to my garden's soils".
Thursday, 7 January 2016, at 11:00 am
Amphitheater B, Biology Department
Host: M. Ladoukakis
Time:
12:00
Description:
SPEAKER: Andreas Mavrandonakis
Department of Chemistry, University of Minnesota
TITLE: "The importance of exposed metal sites in gas adsorption and separation in Metal Organic Frameworks:
a computational point of view."
DATE: Wednesday, 13 January 2016
TIME: 12:00
ROOM: Chemistry Seminar Room
Time:
16:00
Description:
Speaker: Prof. Charles Schroeder
Affiliation: Department of Chemical & Biomolecular Engineering,
University of Illinois, USA
Title: Single polymer dynamics of topologically complex chains: combs,
rings, semi-dilute solutions
Single molecule techniques allow for the direct observation of polymer dynamics in highly non-equilibrium conditions. Until recently,
however, these methods have been largely confined to linear DNA molecules as ʽmodelʼ polymer chains. In this talk, I will discuss recent work from our group in extending the field of single polymer dynamics to broader classes of materials, including branched polymers,
ring polymers, and semi-dilute solutions. In this way, we explore new questions in classical polymer physics such as the role of architecture and interchain interactions on dynamics at the molecular level. In the first part of the talk, I discuss our recent work in directly visualizing DNA-based comb polymers. Macromolecular DNA combs are synthesized utilizing a hybrid enzymatic-synthetic approach,
wherein chemically modified DNA branches and DNA backbones are generated in separate polymerase chain reactions, followed by a graft-onto reaction via click chemistry. This method allows for the synthesis of dual-color DNA combs, such that the backbone and side branches can be tracked independently using single molecule
fluorescence microscopy. In this way, we study the dynamic properties of single comb polymers under flow, including conformational relaxation and stretching dynamics for highly branched chains. In the second part of the talk, I will discuss our recent work in visualizing polymer dynamics in semi-dilute solutions of linear chains in flow.
These results reveal a surprising dependence of interchain interactions for supposedly unentangled solutions, including rich molecular individualism that differs from dilute solution dynamics. I also present corresponding Brownian dynamics simulations of DNA in semi-dilute solutions, which show good agreement with experimental data. Overall, our work highlights the power and utility of using single molecule methods to study fundamental problems in polymer
physics.
Time:
14:00
Description:
Δημόσια Παρουσίαση Διδακτορικής Διατριβής
Μαρία - Ελένη Καστρίτη
"Διερεύνηση του ρόλου της γλοιακής μορφής της πρωτεΐνης TAG-1 στην οργάνωση των εμμύελων ινών στα θηλαστικά"
Τρίτη, 26 Ιανουαρίου 2016 @ 14.00
Αίθουσα 7Α.04 - Πτέρυγα Μεταπτυχιακών Σπουδών - Ιατρική Σχολή