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首页> 外文期刊>Biochemistry >Prokaryotic translation initiation factor IF3 is an elongated protein consisting of two crystallizable domains.
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Prokaryotic translation initiation factor IF3 is an elongated protein consisting of two crystallizable domains.

机译:原核翻译起始因子IF3是由两个可结晶结构域组成的细长蛋白。

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摘要

We show that translation initiation factor IF3 can be split into two fragments of nearly equal size by the Escherichia coli outer membrane protease omptin. Circular dichroism and small-angle neutron scattering show that the two fragments are structured as domains. Each domain is relatively compact, and they are separated by about 45 A in intact IF3. Thus IF3 is an elongated protein that consists of two well-separated domains. We suggest that these two domains are involved in ribosome binding across the cleft of the 30S ribosome. We also report the crystallization of each domain of IF3.
机译:我们显示,翻译起始因子IF3可以被大肠杆菌外膜蛋白酶omptin分成几乎相等大小的两个片段。圆二色性和小角度中子散射表明,这两个片段被构造为畴。每个域相对紧凑,在完整的IF3中相隔约45A。因此,IF3是由两个良好分离的结构域组成的细长蛋白。我们建议这两个域参与跨越30S核糖体裂缝的核糖体结合。我们还报告了IF3每个域的结晶。

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