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One common protein-contact prediction is that, if the side chain of one member of a pair of amino acids brought close together by folding is long, 一种比较普通的蛋白质接触预测就是，如果一对氨基酸的一个侧链折叠后很长，

发表于:2018-12-05 / 阅读(91) / 评论(0)

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发表于:2018-12-24 / 阅读(93) / 评论(0)

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This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation

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I dont understand hip-hop. I think its an age thing. Hip-hop came along just as I stopped buying music and going to clubs. I really dont understand it. Most of my friends arent into it either. My sons are. They love it. Theyre into the fashion and th

发表于:2018-12-26 / 阅读(109) / 评论(0)

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Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

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By Jim Malone Washington 23 June 2006 Political activists, frustrated by the polarized nature of American politics, have decided to do something about it in time for the next U.S. presidential election in 2008. --------------- Unity08.com screenshot

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今天我们还要讲几个由 shoot 这个词发展而成习惯用语。第一个是: shoot from the hip。Hip是臀部也是髋关节的部位。这个习惯用语让我们想起当年粗旷甚至野蛮的美国西部生活。当时人不离枪、枪

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万物简史

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Proteins are what you get when you string amino acids together, and we need a lot of them. 你把氨基酸串在一起，就得到了蛋白质。我们需要大量的蛋白质。 No one really knows, but there may be as many as a million types of pro

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