Department of Physiology, McGill University, Montreal, Quebec, Canada     
 



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lab Members:  Roxana Atanasiu

 

Education:

  • 1984: B.SC. in Biochemistry, University of Bucharest, Bucharest, Romania
  • 1996: Ph.D. In Physiology, University of Montreal, Montreal, Quebec, Canada
     

Abstracts:

Akhavan A, Atanasiu R, Holder N, Han W, Shrier A. Cytoplasmic Domains Determine  HERG Potassium Channel Trafficking. (2004) Biophysical Journal.

Akhavan A, Atanasiu R, Shrier A, C-Terminal Determinants of HERG Potassium Channels  Trafficking. Canadian Physiological Society, 2003  
 
 

Publications:

Akhavan A, Atanasiu R, Shrier A, Identification of a C-Terminal Segment Involved in Maturation and Stability of HERG Potassium Channels. Journal of Biological  Chemistry. 2003 Jul 28

Petrecca K, Atanasiu R, Akhavan A, Shrier A, N-Linked Glycosylation Sites Determine HERG Surface Membrane Expression. Journal of Physiology. 515 (pt 1): 41-8, 1999 Feb
 

Current Project:

The project I am involved in regards the proteomics characterization of the cardiac plasma membrane. In collaboration with Dr. Bergeron, the director of Montreal Proteomics Center, we are doing a comprehensive characterization of the proteins composing the cardiac plasma membrane looking on two different aspects: 1) identification and functional classification of the plasma membran! e proteins (integrals and associated) and 2) uncovering previously unknown proteins which may play an important role in cardiac cell biology. For this we have been developing a new method for preparation of plasma membrane from rat heart which combines subcellular fractionation and immunoadsorption. Mass spectrometry (MS) analysis combined with sequence database searching revealed the presence of several hundred known proteins, out of which 50% have an attributed location to plasma membrane or are associated with it. Interestingly, the MS analysis revealed the presence of 40 novel proteins which are being evaluated as relevant candidates for further studies. Immunolocalization and immunoprecipitation experiments will allow us to identify their localization and interactions with other cellular proteins to gain insight as to ! directions for further functional studies.

We have also begun a parallel project which through a series of immunoprecipitation experiments and mass spectometry analysis is looking for specific ion channel interacting proteins in order to characterize structural and functional ion complexes. These can represent potential molecular targets for therapies associated with pathologies such as cardiac ischemia and heart failure.
 

Other interests:

Taking care, reading good books, listening to music, dancing.

 

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This page was last edited on 22 June, 2004