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Contact details

Georgios A. Spyroulias, PhD.
Department of Pharmacy
University of Patras
Panepistimioupoli-Rion,
GR-26504 Patras, GREECE
Tel:    +30.2610.969950 (office)
+30.2610.969951 (terra silico)
+30.2610.969952 (terra vitro)
Fax:    +30.2610.969950
Email:  G.A.Spyroulias@upatras.gr

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Profile

Polypeptides tend to become organized independently into a variety of functional scaffolds and to socialize with other partner molecules, forming small biomolecular complexes or large assemblies, in various intersections of biological pathways. Proteins’ architecture, plasticity and interaction determine the fate of a variety of biological events. Understanding the functional role of peptides and proteins is strongly coupled to the atomic-level insights of their structure and flexibility.
The research activities of the group encompass the study of the structure and dynamics of peptides and proteins involved in signalling pathways, proteolysis and ion/metal transfer, both in silico and in vitro.
 

Terra Vitro

Terra Vitro is the wet biology lab for protein production, labelling, purification and characterization. NMR study of proteins and protein complexes requires the production and isolation of the molecules labelled in 13C and 15N active NMR nuclei. Proteins with a molecular weight ranging from 8 to 22 kDa (70 to 200 amino acids) are currently over-expressed in high yields in our lab using bacterial and eukaryotic systems and purified/isolated accordingly.
The lab offers a variety of expression vectors and is equipped with all the appropriate facilities for expression, purification and analysis of recombinant native or mutated proteins, bearing a variety of purification tags.

Terra Silico

Terra Silico is the computer lab for NMR data analysis and Biomolecular Simulations. NMR data provide an atomic-level information for the structure, dynamics, and interaction of polypeptides and can drive Structure-Activity Relationship studies through the design of protein/peptide analogues or protein substrates. Biomolecular Simulations are applied to study the conformational dynamics of protein-protein /peptide /substrate complexes.

Terra silico is equipped with powerful computational systems running software for NMR data analysis, structure calculations, docking and molecular dynamics simulation, structure validation etc.

GR-NMR

grnmrAn NMR-related site presenting the Greek groups and their activities in the field. There is a number of teams in various universities and institutes that are applying NMR spectroscopy for conformational studies and for analytical purposes. NMR instruments are settled down in Universities of Athens, Thessaloniki, Ioannina, Crete and Patras, as well as research institutes at Athens (NCSR Demokritos, National Hellenic Research Foundation; NHRF) with the higher field magnet being 600 MHz (U of Athens and NHRF). The research activities of the Greek NMR groups are oriented to the analysis of natural products and drug candidates, the conformational properties of peptides and proteins and food quality analysis.

EAST-NMR

EAST-NMR is an FP7 EU-funded project. It has the specific aim to enhance the access to NMR facilities and the NMR services to East European users towards an efficient and coordinated pan-European pool of NMR capacities to enable collaborative research and technological achievements.
EAST-NMR will combine activities, such as: (i) Networking, (ii) Trans-national access, and (iii) Joint research activities, in a co-ordinated manner. University of Patras is the Greek partner (Partner #12) to EAST-NMR project and is participating to a variety of activities such as, NMR workshops & conferences, young investigators meetings, etc. The program website will be available soon and will be announced.

Research Highlights

Modelling and NMR studies of AChR subunits (“Neurocypres”). to gain new insights for the structure, dynamics and socialization of nAChR subunits and their interaction with ligands.  Read more…

Expression and NMR studies of proteins involved in Ubiquitination pathway, like Arkadia E3 ubiquitin ligase RING Finger domain {Kandias N. et al. BBRC  2009}, which is the first example of an E3 ligase that positively regulates TGF-β family signaling, through ubiquitination. Read more…

Simulated interactions of Zn-proteases with peptide substrates and drug candidates through docking & Molecular Dynamics simulations provide new insights into the conformational dynamics of the Angiotensin-I Converting Enzyme (ACE), Anthrax Lethal Factor (ALF) etc., {Papakyriakou A. et al. Biochemistry 2007, Dalkas G. et al. Protein Science 2009, Dimitropoulos N. et al. 2009} complexes, disclosing the structural basis of the enzyme’s activity, substrate binding and selectivity... Read more…

 

rtrainoprtResearch Training Opportunities

The group offer research training opportunities to Pharmacy, Chemistry, Biology or Medicine under- and post-graduate students who want to get involved in research training activities in the frame of their Diploma Thesis or to acquire a Master or a Ph.D. degree.  Read more…

Students will receive training in the fields of protein expression and characterization, analysis of NMR spectra of peptides and proteins, structure determination of polypeptides using NMR structural information and Biomolecular Simulations and they will work on one of the research projects of the group.

No previous experience is required.  All you need is talent and enthusiasm!
 

Hot & Fresh Papers

The mechanism of Cu(A) assembly, studied through NMR {Abriata LA. et al. Nature Chem Biol 2008, 599-601} and the role of a new periplasmic protein (PCu(A)C) and metallochaperone Sco1 in the reconstitution of the Thermus thermophilus ba(3) oxidase subunit II Cu(A) has been elucidated. Read more…

NMR study of the charge-dependent interaction of PND V3 peptides and the CCR5 N-terminal {Galanakis PA. et al. Biopolymers 2009, 92, 94-109 }, attempts to elucidate the impact of the number and the position of the positively charged V3 residues in the V3 - CCR5 interaction. Read more…

Insights into the Anthrax Lethal Factor-Substrate Interaction and Selectivity Using Docking and Molecular Dynamics Simulations {Dalkas GA. et al. Protein Science 2009, 18, 1774-1785}, are obtained for residues into sub-sites distant from the Zn-site and substrate scissile bond . Read more…

 
NMR model In silico model In silico complex
The NMR 3D model of the new periplasmic Therm. Thermophilus protein (PCu(A)C) {Abriata LA. et al. Nature Chem Biol 2008, 599-601}. See more…

Computational model of the HMR-1766 and the soluble Guanylyl Cyclase (sGC) complex {Zhou Z. et al. Am J Physiol Heart Circ Physiol. 2008, 295, H1763-71}. See more…

The simulated complex of CDK1 and newly synthesized pyrrolo-carbazoles {Fousteris MA. et al. J Med Chem 2008, 51, 1048-1052}. See more…
NMR meeting NMR@FEBS Editorial
Joint EUROMAR 2010 and 17th ISMAR Conference - A WorldWide Magnetic Resonance Conference is held at Florence, Italy, July 4-9, 2010. Read more…

Biological magnetic Moments  is a satellite EUNMR meeting held as a mini symposium of the FEBS conference. 34th FEBS is organized at Prague the period July 4-9, 2009 . Read more...

Bentham Sci. “Current Pharmaceutical Design” has  published a Special Issue with 9 articles on  the Latest Achievements on Zn-enzymes (2009; Vol 15, Issue 31) . Read more…