The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

  
       
         
    STUDIA PHYSICA - Issue no. 1 / 2005  
         
  Article:   SPECTRAL TITRATION OF THE PROTEORHODOPSIN.

Authors:  KLÁRA MAGYARI, MELINDA LAKATOS, JULIÁNNA SZAKÓCS, GYÖRGY VÁRÓ. 		 
       
         
  Abstract:  Proteorhodopsin is a retinal-containing integral membrane protein. It is a light-driven proton pumping whit a photocycle similar to that of bacteriorhodopsin. The pKa of the wild-type PR was determined from spectral titration in the pH range 4.5-10. The pKa of the proton acceptor Asp-97 was established to be 7.1. Comparing this value with the pKa of the proton acceptor group of bacteriorhodopsin, being 2.5, the proteorhodopsin has a much higher pKa. The potential importance of proteorhodopsin is in the possible applications in optical data storage and optical signal processing.  
         
     
         
         
      Back to previous page