The Human Proteoform Atlas: a FAIR community resource for experimentally derived proteoforms

Michael A R Hollas, Matthew T Robey, Ryan T Fellers, Richard D LeDuc, Paul M Thomas, Neil L Kelleher
2021 Nucleic Acids Research  
The Human Proteoform Atlas (HPfA) is a web-based repository of experimentally verified human proteoforms on-line at and is a direct descendant of the Consortium of Top-Down Proteomics' (CTDP) Proteoform Atlas. Proteoforms are the specific forms of protein molecules expressed by our cells and include the unique combination of post-translational modifications (PTMs), alternative splicing and other sources of variation deriving from a specific gene. The HPfA uses
more » ... FAIR system to assign persistent identifiers to proteoforms which allows for redundancy calling and tracking from prior and future studies in the growing community of proteoform biology and measurement. The HPfA is organized around open ontologies and enables flexible classification of proteoforms. To achieve this, a public registry of experimentally verified proteoforms was also created. Submission of new proteoforms can be processed through email, and future iterations of these proteoform atlases will help to organize and assign function to proteoforms, their PTMs and their complexes in the years ahead.
doi:10.1093/nar/gkab1086 pmid:34986596 pmcid:PMC8728143 fatcat:72lje2ztvjh4lfzqyq3fjvndje