| 我国“北京人”、“兰田人”和“元谋人”产地骨化石中氨基酸的地球化学 |
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| 引用本文： | 李任伟
,林大兴.我国“北京人”、“兰田人”和“元谋人”产地骨化石中氨基酸的地球化学[J].地质科学,1979,14(1):56-62. |
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| 作者姓名： | 李任伟 林大兴 |
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| 摘 要： | 氨基酸是生命物质中普遍存在的一类重要的有机化合物,它是构成蛋白质的“砖块”。一个最简单的氨基酸分子至少必须含有一个羧基和一个氨基的官能团。在生物的蛋白质中通常只包括有二十种氨基酸,叫做蛋白氨基酸。但是自然界还存在其它种类的氨基酸,因为它们一般不存在于蛋白质中,所以叫做非蛋白氨基酸。除了最简单的甘氨酸外,所有的氨基酸都含有一个以上的不对称的碳原子。含有一个不对称碳原子的氨基酸可以存在L和D型两种结构的对映体。所有的蛋白质氨基酸都属L构型。
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| 关 键 词： | , |
GEOCHEMISTRY OF AMINO ACIDS OF FOSSIL BONES FROM DEPOSITS OF“PEKING MAN,&rdquo|“LANTIAN MAN”AND“YUANMO MAN”IN CHINA |
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| Li Renwei,Lin Daxing.GEOCHEMISTRY OF AMINO ACIDS OF FOSSIL BONES FROM DEPOSITS OF“PEKING MAN,&rdquo|“LANTIAN MAN”AND“YUANMO MAN”IN CHINA[J].Chinese Journal of Geology,1979,14(1):56-62. |
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| Authors: | Li Renwei Lin Daxing |
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| Abstract: | Part of the amino acids contained in fossil bones from deposits in the localities of "Peking man", "Lantian man" and "Yuanmo man" has been analysed by gas chromatographic method. They are alanine, valine, glycine, isoleucine and alloiso-leucine, leucine (+β-alanine), proline (+ threonine), serine, r-ABA, methionine, hydroxyproline, phenylalanine, aspartic acid, glutamic acid and lysine. The main constituents of the fossil bones are gly., glu., ala., pro., asp., and so on. With increase in geological age of the sample, the total amount of amino acids and content of unstable amino acids decrease, but the alleu/iso. ratios increase with geological age.In this article the authors also tried to estimate the geological age of "Peking man" with application of the racemization of isoleucine. |
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