Extraction and sequencing of human and Neanderthal mature enamel proteins using MALDI-TOF/TOF MS
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- 作者：Christina M. Nielsen-Marsh ; Christin Stegemann ; Ralf Hoffmann ; Tanya Smith ; Robin Feeney ; Michel Toussaint ; Katerina Harvati ; Eleni Panagopoulou ; Jean-Jacques Hublin ; Michael P. Richards
- 关键词：Proteomics ; Enamel ; Neanderthal ; MALDI-TOF-TOF
- 刊名：Journal of Archaeological Science
- 出版年：2009
- 出版时间：August 2009
- 年：2009
- 卷：36
- 期：8
- 页码：1758-1763
- 全文大小：444 K
文摘
We report here the first results of a method to extract and sequence mature enamel proteins from modern human and Neanderthal tooth enamel. Using MALDI-TOF/TOF mass spectrometry and a combination of direct sequencing and peptide mass mapping we have sequenced a peptide from the tyrosine-rich amelogenin peptide (TRAP) of the X isoform of the amelogenin protein for modern and recent human samples. We also report our results from two Neanderthal enamel samples where we were also able to recover fragments of the TRAP protein, which had a similar sequence to the modern human samples.