[BioC] Protein/peptide mass

[john seers (IFR)]

Hi Sean


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In that case, you can do something like this:

 x <- url(' 
http://ca.expasy.org/cgi-bin/pi_tool?protein=MKWVTFISLLFLFSSAYS&resoluti
on=m
onoisotopic')
 res <- readLines(x)
 
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That looks like exactly what I need, especially if I can put in all the
variations for modifications etc. Can you tell me where I can see the
various options?

Unfortunately I have a problem with:

> res <- readLines(x)
Error in readLines(x) : cannot open the connection
In addition: Warning message:
cannot open: HTTP status was '403 Forbidden' 
> 

I think it is something to do with the proxy server here. I have tried
setting the proxy settings but that has not solved it. I will try this
at home and then see if I can solve later at work.

Thanks very much.


John Seers