Analyses of soft tissue from Tyrannosaurus rex suggest the presence of protein
Analyses of soft tissue from Tyrannosaurus rex suggest the presence of protein
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DOI：
10.1126/science.1138709
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发表时间：
2007-04-13
期刊：
影响因子：
56.9
通讯作者：
Horner, John R.
中科院分区：
文献类型：
--
作者：
Schweitzer, Mary Higby;Suo, Zhiyong;Horner, John R.
我们对霸王龙雷克斯（标本莫尔1125）脱矿后剩余的纤维皮质和髓质组织进行了多次分析。结果表明，胶原蛋白I，骨的主要有机成分，已被保存在这些组织中的低浓度。这些发现得到了质谱分析的独立证实。我们提出了一个可能的化学途径，可能有助于这种保护。恐龙骨骼中内源性蛋白质的存在可能验证有关进化关系、速率和分子变化和降解模式以及分子随时间的化学稳定性的假设。
We performed multiple analyses of Tyrannosaurus rex ( specimen MOR 1125) fibrous cortical and medullary tissues remaining after demineralization. The results indicate that collagen I, the main organic component of bone, has been preserved in low concentrations in these tissues. The findings were independently confirmed by mass spectrometry. We propose a possible chemical pathway that may contribute to this preservation. The presence of endogenous protein in dinosaur bone may validate hypotheses about evolutionary relationships, rates, and patterns of molecular change and degradation, as well as the chemical stability of molecules over time.