Proteins are essential players of all biological processes and they are involved in practically every function performed by a living cell.
The present project aims to synthesize the ancestral catalytic domain of PTPs as corresponding to the derived sequence, to characterize it by a multitude of in vivo and in vitro procedures and to offer in this way new information regarding the evolution of the PTPs and their role in the ancient world.
We expect that the sequence of the ancestor PTP together with its enzyme kinetic characteristics, in vitro and in vivo substrate specificity profiles will have a major impact on understanding how PTPs evolved from an ancestral form to the existing representatives.
Dr. Stefan Szedlacsek, Romanian Head of Project
Postdoctoral researcher: Mihaela Mențel
Postdoctoral researcher: Georgiana Petrăreanu
PhD Student: Rodica-Aura Badea
Msc: Aura-Elena Ionescu
Student: Ioana Iancu
Under construction
Articles:
(1) Böhmer F, Szedlacsek S, Tabernero L, Ostman A, den Hertog J., “Protein tyrosine phosphatase structure-function relationships in regulation and pathogenesis”. FEBS J. 2013 Jan; 280(2):413-31. doi: 10.1111/j.1742-4658.2012.08655.x.; (2012)
(2) Petrareanu G., “The molecular and cellular characterization of a non-receptor protein tyrosine phosphatase”, Rom. J. Biochem., 50, (2013);
(3) Mentel M., Iancu I., Kibedi Szabo C. Z., Munteanu C.V.A., Szedlacsek S., “Co-expression of human wdr1 gene with a chaperone increases its protein solubility”, Rom. J. Biochem., 50, 1, 39–51 (2013)
Conference:
Mentel M., Iancu I., Ionescu A.E., Kibedi Szabo C. Z., Munteanu C.V.A., Szedlacsek S.; "Identification of highly efficient substrate-trapping mutant of eyes absent tyrosine phosphatase”, Oral presentation at International Conference of RSBMB, June 5-6, 2014, Baile Felix, Oradea, Romania (2014)
Poster presentations:
(1) “Effects of site-directed mutagenesis on the enzymatic activity of non-receptor protein tyrosine phosphatase PTPD1” (Meeting abstracts-poster); FEBS Journal Special Issue: 22nd IUBMB & 37th FEBS Congress, Seville, 2012; ISSN/ISBN 1742-464X
(2) “Receptor-like protein tyrosine phosphatase mu dephosphorylates and interacts with phospholipase C gamma 2” (Meeting abstract-poster); FEBS Journal Special Issue: 22nd IUBMB & 37th FEBS Congress, Seville, 2012; ISSN/ISBN 1742-464X
(3) “Identification of potential phosphorylation sites of actin-interacting protein 1” (Meeting abstract-poster) FEBS Journal Special Issue: 22nd IUBMB & 37th FEBS Congress, Seville, 2012; ISSN/ISBN 1742-464X;
(4) “The presentation of a poster entitled „Mass Spectrometric investigations regarding phosphorylation of human Eya3 by Src kinase” (Meeting abstract-poster); Europhosphatase; Phosphorylation switches and cellular homeostasis; Authors: Aura Elena Ionescu, Mihaela Menţel, Cristian V. A. Munteanu, Cristian Marian Butnaru, Rodica Aura Badea, Ioana Iancu, Ştefan Eugen Szedlacsek), at the EMBO Conference - Turku, Finland; 2015