Re: [Psidev-pi-dev] [HUPO-PSI/mzTab] Protein group (#20)

[andrewrobertjones <not...@gi...>]

It would probably make sense to revisit what mzTab is trying to do overall. Is it now a flattened encoding of everything possible in mzIdentML or mzQuantML, or is it accepted that this is an intentionally lossy encoding that is useful for visualisation (and stats?)? 

Julian's suggestion of having a column (presumably not row) for group_ID is one way that this could work - going further down the road of mzTab being a full encoding of the information, but this would not work well for quantitative data - unless null values were placed throughout for every group members other than the group leader/representative protein. To me, one of the most useful cases for mzTab is being able to download or exchange quant data in this format, and load it straight into R. For this to work, all the extra info about group members is largely irrelevant.


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