Abstract
The Ramachandran plot displays the main chain conformation angles (φ and Ψ) of the polypeptide chain of a protein molecule. The paper reports the updated version of the Ramachandran plot web server and has several improved options for displaying the conformation angles in various regions. In addition, options are provided to display the conformation angles in various secondary structural elements and regions within the user specified φ and Ψ values in the plot. The updated version is accessible at the following URL: http://dicsoft1.physics.iisc.ernet.in/rp/
Keywords: Ramachandran plot, conformation angles, web server and Internet computing