Thank you Jimmy.  Saves me much time tinkering knowing the approach won't
work

Brian


On Fri, Feb 22, 2013 at 11:14 AM, Jimmy Eng <[email protected]> wrote:

> Brian,
>
> Will not work; there's currently no way to specify multiple variable mods
> on the N-terminus so you'll have to manage with some work-around.  There
> are plans to treat the terminal mods the same way as amino acid mods in the
> code (and this was a good reminder to go implement it) but it will be a
> while before that version is available.
>
>
> On Fri, Feb 22, 2013 at 2:39 AM, Brian Hampton <[email protected]>wrote:
>
>> I am trying to determine how to specify multiple variable modifications
>> in the comet.params file.
>>
>> I have stable isotope labeled primary amines so I need to specify 2
>> different mods on K and the N-terminus.
>>
>> Tandem uses [ to specify the N-terminus.  What notation does Comet use?
>>
>> In the below example, I am guessing (probably incorrectly) "n" is used
>> for denoting the N-terminus to Comet.  Will this work?  In Tandem, a
>> similar approach would not work but there is a work around.  For Comet,
>> would I have to run two searches one for heavy and another for light using
>> the "variable_N_terminus= " line in the comet.params for specifying the
>> N-terminus?
>>
>> variable_mod1 = 15.9949 M 0 3
>> variable_mod2 = 42.04695 nK 0 3
>> variable_mod3 = 48.084606 nK 0 3
>>
>>
>> Thanks in advance for any help.
>>
>> Brian
>>
>> Brian Hampton
>> Protein Analysis Lab
>> Center for Vascular and Inflammatory Diseases
>> University of Maryland School of Medicine
>> 800 West Baltimore Street Rm 307
>> Baltimore  MD  21201
>> V: 410-706-8207
>> F: 410-706-8234
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "spctools-discuss" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to [email protected].
>> To post to this group, send email to [email protected].
>> Visit this group at http://groups.google.com/group/spctools-discuss?hl=en
>> .
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>>
>>
>
>  --
> You received this message because you are subscribed to the Google Groups
> "spctools-discuss" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to [email protected].
> To post to this group, send email to [email protected].
> Visit this group at http://groups.google.com/group/spctools-discuss?hl=en.
> For more options, visit https://groups.google.com/groups/opt_out.
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"spctools-discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/spctools-discuss?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.


Reply via email to