Proforma v2

Proforma v2 in DocProc [handling editor: Sylvie Ricard-Blum]

The specification document, ProForma (Proteoform and Peptidoform Notation (version 2.0.0, draft 12) has been submitted to the PSI document process.

After having passed a 30-day review of the PSI steering group with minor changes, the proposed document version 2.0.0 DRAFT now goes through 60-day public comments and external review phase until February 27th, 2021.

ProForma v2 aims to standardise the representation of proteoforms/peptidoforms supporting the main proteomics approaches, including both bottom-up (focused on peptides/peptidoforms) and top down (focused on proteins/proteoforms) approaches.

Specification document: ProForma_v2_draft12_0.docx, ProForma_v2_draft12_0.pdf

Use case examples:

Development background:


Please send comments by e-mail directly to sylvie.ricard-blum at

for example regarding the following criteria:

  • That the specification is presented in accordance with the templates and is clearly written.
  • That it is sufficiently detailed and comprehensively describes the necessary and sufficient explanation of the specification.

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There is no requirement that people commenting should have had any prior contact with the PSI.


Thank you very much in advance for your valuable time and participation

Sylvie RICARD-BLUM - PSI Editor