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Orbitrap_SciLib
Reputable Mentor II
Reputable Mentor II
Sun L, Bertke MM, Champion MM, Zhu G, Huber PW, Dovichi NJ.
Sci Rep. 2014 Mar 14;4:4365. doi: 10.1038/srep04365.
While there is a rich literature on transcription dynamics during the development of many organisms, protein data is limited. We used iTRAQ isotopic labeling and mass spectrometry to generate the largest developmental proteomic dataset for any animal. Expression dynamics of nearly 4,000 proteins of Xenopus laevis was generated from fertilized egg to neurula embryo. Expression clusters into groups. The cluster profiles accurately reflect the major events that mark changes in gene expression patterns during early Xenopus development. We observed decline in the expression of ten DNA replication factors after the midblastula transition (MBT), including a marked decline of the licensing factor XCdc6. Ectopic expression of XCdc6 leads to apoptosis; temporal changes in this protein are critical for proper development. Measurement of expression in single embryos provided no evidence for significant protein heterogeneity between embryos at the same stage of development.

http://www.nature.com/srep/2014/140314/srep04365/full/srep04365.html
University of Notre Dame
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