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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，

经济学人:分子生物学 蛋白质的奥秘(1)

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AP 2011-03-26

1. In Libya, air strikes from the United States and its allies go on with reports that Moammar Gadhafi's tanks are rolling back from one city where they have been attacking that city in rebel control. 2. At least one person is dead in a bombing in Je

SSS 2011-04-20

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t

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SSS 2012-04-17

This is Scientific American 60 second Science I am Sophie Bushwick, got a minute? As it ages, white paper turns a distinctive yellow. But why? To find out, scientists artificially aged modern paper to reveal the changes on the molecular level. The re

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Olive oil is 100% fat; there's nothing else in it. 橄榄油含有100%的脂肪，除此之外没有别的。 Pancake mix, on the other hand, is only about 11% fat. 相反，煎饼只有约11%的脂肪。 And, yet, olive oil is good for you, and panc

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Fortunately more sober types were at work elsewhere. In 1808, a dour Quaker named John Dalton became the first person to intimate the nature of an atom (progress that will be discussed more completely a little further on), and in 1811 an Italian with

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经济学人292:天体化学 空中的大试管

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Using bacteria to generate energy hopeful

BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Ac

AP 2010-03-11

[1] Iraqis are looking forward to Sunday's elections, but some fear possible chaos. The vote is Iraq's second nationwide election and comes at a vastly different time than the first in 2005. US troops have all but vanished from streets, but attacks c

TED演讲：宏观历史(6)

But of course, life is more than just exotic chemistry. 但是当然，生命不仅仅是奇异的化学物质。 How do you stabilize those huge molecules that seem to be viable? 那是怎么稳定那些大量的、似乎有存活的分子的呢？

万物简史 第408期:生命的起源(2)

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

万物简史 第362期:进入对流层(3)

The temperature six miles up can be -70 degrees Fahrenheit, and you would need, or at least very much appreciate, supplementary oxygen. 10公里高空的温度会降至零下57摄氏度，你需要补充氧气，至少很希望这么做。 After you

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Nor does abundance necessarily relate to importance. 风度与重要程度也不一定有关系。 Carbon is only the fifteenth most common element, accounting for a very modest 0.048 percent of Earth's crust, but we would be lost without it. 碳只居

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Amd of course, you've just heard and you already know that we're running out of antibiotics. 当然，你一定听说过，而且你早就知道了，我们快要没有有效的抗生素了。 Bacteria are incredibly multi-drug-resistant right now, a