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Gene-specific correlation of RNA and protein levels in human cells and tissues
KTH Royal Inst Technol, Sci Life Lab, Stockholm, Sweden..
KTH Royal Inst Technol, Sci Life Lab, Stockholm, Sweden..
KTH Royal Inst Technol, Sci Life Lab, Stockholm, Sweden..
KTH Royal Inst Technol, Sci Life Lab, Stockholm, Sweden..
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2016 (engelsk)Inngår i: Molecular Systems Biology, ISSN 1744-4292, E-ISSN 1744-4292, Vol. 12, nr 10, artikkel-id 883Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

An important issue for molecular biology is to establish whether transcript levels of a given gene can be used as proxies for the corresponding protein levels. Here, we have developed a targeted proteomics approach for a set of human non-secreted proteins based on parallel reaction monitoring to measure, at steady-state conditions, absolute protein copy numbers across human tissues and cell lines and compared these levels with the corresponding mRNA levels using transcriptomics. The study shows that the transcript and protein levels do not correlate well unless a gene-specific RNA-to-protein (RTP) conversion factor independent of the tissue type is introduced, thus significantly enhancing the predictability of protein copy numbers from RNA levels. The results show that the RTP ratio varies significantly with a few hundred copies per mRNA molecule for some genes to several hundred thousands of protein copies per mRNA molecule for others. In conclusion, our data suggest that transcriptome analysis can be used as a tool to predict the protein copy numbers per cell, thus forming an attractive link between the field of genomics and proteomics.

sted, utgiver, år, opplag, sider
2016. Vol. 12, nr 10, artikkel-id 883
Emneord [en]
gene expression, protein quantification, targeted proteomics, transcriptomics
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-308938DOI: 10.15252/msb.20167144ISI: 000386948100001OAI: oai:DiVA.org:uu-308938DiVA, id: diva2:1051310
Forskningsfinansiär
Knut and Alice Wallenberg FoundationTilgjengelig fra: 2016-12-01 Laget: 2016-12-01 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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