Hi Jimmy,

Is this fix included in the 5.1 release candidate that is available at the 
sourceforge Sashimi page? TPP_Setup_5.1.0-rc1.exe

Best,

Alejandro

On Wednesday, September 6, 2017 at 10:37:10 PM UTC+2, Jimmy Eng wrote:
>
> Oded,
>
> I just checked in a fix for the issue.  It will hopefully be available in 
> the next TPP 5.1.0 release whenever that happens.
>
> Jimmy
>
> On Thu, Aug 31, 2017 at 7:00 AM, Oded <[email protected] <javascript:>> 
> wrote:
>
>> Hi there,
>> I am trying to do run a quantitative analysis of dimethylated samples 
>> labelled on N-term and lysine (using either trypsin or ArgC) using TPP ver5 
>> on Windows.
>> I ran X!Tandem or Comet searches using fixed light di-Met modification of 
>> Lys and N-term (+28.03) and the Heavy-Light delta (6.031) as variable 
>> modifications as explained here, and I used successfully before. 
>> Quantification with XPRESS run without any error but the ratio 
>> calculation seems to be correct only for peptides that contain a lysine 
>> (regardless if they were heavy or light). The ratio calculated for peptides 
>> that do not contain lysines is correct only for the light labelled ones but 
>> for the heavy ones the program seems to consider them as light peptides and 
>> searches for peaks that are +6 heavier in order to calculate the ratio.
>> For example if we got the peptide AAAHTSPR  that was identified in the 
>> light dimethylation on the N-term, MH= 838.4530) the program will look for 
>> the heavy couple at the right place (MH=844.4848) but if the same peptide 
>> was identified in its heavy form (MH 838.4530) it seems like the program is 
>> looking for the heavy partner at 844.4848.
>> Another minor (?) comment is that running such searches with X!tandem 
>> seems to mark the heavy N-term dimethylation in a different way than it 
>> used to before (and currently appear in Comet pepxml) add looks like this:
>> n7.04A99.07TAGDTHLGGEDFDNR (instead of n35.07 
>> <http://www.ncbi.nlm.nih.gov/blast/Blast.cgi?CMD=Web&LAYOUT=TwoWindows&AUTO_FORMAT=Semiauto&ALIGNMENTS=50&ALIGNMENT_VIEW=Pairwise&CDD_SEARCH=on&CLIENT=web&COMPOSITION_BASED_STATISTICS=on&DATABASE=nr&DESCRIPTIONS=100&ENTREZ_QUERY=%28none%29&EXPECT=1000&FILTER=L&FORMAT_OBJECT=Alignment&FORMAT_TYPE=HTML&I_THRESH=0.005&MATRIX_NAME=BLOSUM62&NCBI_GI=on&PAGE=Proteins&PROGRAM=blastp&SERVICE=plain&SET_DEFAULTS.x=41&SET_DEFAULTS.y=5&SHOW_OVERVIEW=on&END_OF_HTTPGET=Yes&SHOW_LINKOUT=yes&QUERY=ATAGDTHLGGEDFDNR>
>> ATAGDTHLGGEDFDNR. 
>> <http://www.ncbi.nlm.nih.gov/blast/Blast.cgi?CMD=Web&LAYOUT=TwoWindows&AUTO_FORMAT=Semiauto&ALIGNMENTS=50&ALIGNMENT_VIEW=Pairwise&CDD_SEARCH=on&CLIENT=web&COMPOSITION_BASED_STATISTICS=on&DATABASE=nr&DESCRIPTIONS=100&ENTREZ_QUERY=%28none%29&EXPECT=1000&FILTER=L&FORMAT_OBJECT=Alignment&FORMAT_TYPE=HTML&I_THRESH=0.005&MATRIX_NAME=BLOSUM62&NCBI_GI=on&PAGE=Proteins&PROGRAM=blastp&SERVICE=plain&SET_DEFAULTS.x=41&SET_DEFAULTS.y=5&SHOW_OVERVIEW=on&END_OF_HTTPGET=Yes&SHOW_LINKOUT=yes&QUERY=ATAGDTHLGGEDFDNR>
>> I hope you can advise.
>> Thanks
>> Oded
>>
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