hii, i have a list of proteins(125), and protein protein interaction data from string. i want to see my list of protein in protein-protein interaction through cytoscape means i want to see my protein interaction in string dada which i had downloaded. please help me how i can do this in Cytoscape
I am not sure I understand your question.
If what you want to do is to show a STRING network for 125 proteins in Cytoscape, that is easily accomplished with the Cytoscape STRING App. Just install the app, go to File->Import->Network->Public Databases, select "STRING protein query", paste in your 125 proteins, select your desired confidence cutoff, and go through the identifier disambiguation step as you would in the STRING web interface. After that you should see the STRING network in Cytoscape, even looking very much like it does in the web interface.
If what you are trying to do is something more specific to Cytoscape, you will probably have more luck asking the Cytoscape help desk on Google Groups.