Protein protein interaction
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7.4 years ago

I am using Cytoscape to build a network which is a union of three or four databases. I want all the interactions seen in the network to be present in a separate file say gene 1 is connected to gene 2 and gene 5 so I want the data as follow:

gene 1 gene 2
gene 1 gene 5

Please help me out with the same. What should I do?Is there a way to do so in cytoscape or I should opt for some other option. if yes, then please let me know the other option.

gene • 1.8k views
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7.4 years ago

In Cytoscape 3.x, use the menu: File > Export > Network and select the SIF format.

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Thank you for your reply, But I am getting Access is Denied

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You need to give more information. "Access denied" doesn't mean anything to me. Is it a Windows message ? If so, maybe it means you're not allowed to write the file in the directory you've selected. I don't use Windows so this is just a guess.

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Your guess was right. I have done that. Thank you. can you please tell me the difference between shared name and Human readable name. I am getting shared name I guess.. Is there any setting where I can get the Human readable form, and also what is EBI-6345887. The output I am getting in my SIF file is as follows. Please explain its meaning. "Q07979 EBI-6345887 P40350"

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I never got the difference between the name and shared name columns in Cytoscape. The are always identical for my graphs. I am not sure what you mean by human readable form but I think you mean either gene/protein name or gene symbol. Cytoscape doesn't do ID conversion (or maybe there's a plugin for this) so either import your graphs with the desired identifiers or do the conversion once you've exported the graph. The SIF format is: interactor A, interaction_type, interactor B, separated by some white space. EBI-6345887 is an interaction ID from the IntAct database, the other identifiers are UniProt accession numbers. You can also export data seen in the table panel to a csv file using File > Export > Table. After that, you can just process the files with a script to reorganize the data as you need them.

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Ohkk, Thank you so much for your answer. It really helped.

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What does the graph tell us? Like which of them are proteins, which of them are genes etc. Please acquaint me with this. I am new to usage of cytoscape, rather I am new to the field and I have not got any tutorials or documentation, that could be a benefit.

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I would suggest you look for someone to teach/mentor you or find some introductory classes close to you. Failing this, there are plenty of tutorials and introduction to bioinformatics online. See this post for a start. You could also post a new question asking for more specific recommendations.

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