1·Agronomists studying the herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.
研究这种药草的农学家发现，它会产生大量的组氨酸，这种氨基酸在试管溶液中会使这些金属具有化学惰性。
2·Indeed, it has ten times more histidine than the average protein.
实际上，它含有的组氨酸是普通蛋白质的10倍。
3·Histidine likes to bind tightly to zinc ions.
组氨酸喜欢跟锌离子紧密结合。
4·The protein in question contains a lot of an amino acid called histidine.
这种尚不十分了解的蛋白质，含有大量叫做组氨酸的氨基酸。
5·Modification of histidine residue did not change the activity of enzyme and its fluorescence emission peak intensity.
组氨酸残基被修饰后酶活力基本不变，酶的荧光强度也不改变。