论文标题
血石：一种含铁和锂的陨石蛋白
Hemolithin: a Meteoritic Protein containing Iron and Lithium
论文作者
论文摘要
本文描述了第一种在陨石中发现的蛋白质。先前在Acfer 086和Allende陨石[1,2]中观察到的氨基酸聚合物在ACFER 086中通过高精确的MALDI质谱法进一步表征，以揭示分子量2320 Daltons的主要统一结构，该结构涉及Glycine和Hydroxy-Glycine-Glycine ox and Oxem and oxem and contem and con Atery Atery Atery Atery Athy Athy and cons and cons and cons and con。信噪比高达135个，允许通过同位素卫星在各种MALDI片段中对铁和锂进行定量，因为它们各自的少数同位素质量54FE和6LI。分析与每个分子片段相关的同位素的完整光谱显示，在陆生平均上方25,700个零件（Sigma = 3,500，n = 15）上方的2H增强，证实了地球外来源，因此该分子存在于CV3 Meteorite类别的小星产中。该分子是通过铁氧铁分组倾斜的，即在其他陆地上，已经提出能够吸收光子并将水分解为羟基和氢部分。
This paper characterizes the first protein to be discovered in a meteorite. Amino acid polymers previously observed in Acfer 086 and Allende meteorites [1,2] have been further characterized in Acfer 086 via high precision MALDI mass spectrometry to reveal a principal unified structure of molecular weight 2320 Daltons that involves chains of glycine and hydroxy-glycine residues terminated by iron atoms, with additional oxygen and lithium atoms. Signal-to-noise ratios up to 135 have allowed the quantification of iron and lithium in the various MALDI fragments via the isotope satellites due to their respective minority isotopic masses 54Fe and 6Li. Analysis of the complete spectrum of isotopes associated with each molecular fragment shows 2H enhancements above terrestrial averaging 25,700 parts per thousand (sigma = 3,500, n=15), confirming extra-terrestrial origin and hence the existence of this molecule within the asteroid parent body of the CV3 meteorite class. The molecule is tipped by an iron-oxygen-iron grouping that in other terrestrial contexts has been proposed to be capable of absorbing photons and splitting water into hydroxyl and hydrogen moieties.
