[Biojava-l] Isoelectric point and molecular weight calculations with BioJava - Conserns

[Mark Chapman]

Hi Udana,

>> 2. Package org.biojava.bio.proteomics - Class_MassCalc
>> In "calcTermMass" method they have added extra H if MH_PLUS is true.I am
>> little bit confuse why we have to add a extra H when calculating term mass?
>> and What is the importance of MH_PLUS prpperty?
>
> not sure, somebody else might be able to say more about this
>

Common mass spectrometry techniques use a proton transfer to ionize proteins (or 
fragments) for analysis.  This results in peaks in the mass spectra at the mass 
of MH+ for each molecule M.

-Mark