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How many human proteoforms are there?
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2018 (English)In: Nature Chemical Biology, ISSN 1552-4450, E-ISSN 1552-4469, Vol. 14, no 3, p. 206-214Article in journal (Refereed) Published
Abstract [en]

Despite decades of accumulated knowledge about proteins and their post-translational modifications (PTMs), numerous questions remain regarding their molecular composition and biological function. One of the most fundamental queries is the extent to which the combinations of DNA-, RNA-and PTM-level variations explode the complexity of the human proteome. Here, we outline what we know from current databases and measurement strategies including mass spectrometry-based proteomics. In doing so, we examine prevailing notions about the number of modifications displayed on human proteins and how they combine to generate the protein diversity underlying health and disease. We frame central issues regarding determination of protein-level variation and PTMs, including some paradoxes present in the field today. We use this framework to assess existing data and to ask the question, "How many distinct primary structures of proteins (proteoforms) are created from the 20,300 human genes?" We also explore prospects for improving measurements to better regularize protein-level biology and efficiently associate PTMs to function and phenotype.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2018. Vol. 14, no 3, p. 206-214
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Biological Sciences
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URN: urn:nbn:se:kth:diva-223782DOI: 10.1038/NCHEMBIO.2576ISI: 000425093100012PubMedID: 29443976Scopus ID: 2-s2.0-85042114532OAI: oai:DiVA.org:kth-223782DiVA, id: diva2:1188307
Note

QC 2018307

Available from: 2018-03-07 Created: 2018-03-07 Last updated: 2018-03-07Bibliographically approved

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Lundberg, Emma

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Amster, I. JonathanBaker, Mark S.Lundberg, EmmaWohlschlager, Therese
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