SSS 2012-07-25
时间：2018-12-24 作者：英语课 分类：Scientific American(七)月
英语课
This is Scientific American's 60 seconds science. I'm Ian Chant. Got a minute
Secret identities aren't just for superheros anymore. Researchers have found that protein present in everything from amoebas to people is living the double life. Once it binds 1 the DNA 2, the protein called RFAH, rips apart, and then refolds into different shape to do a different job. RFAH is transcriptional protein, attached to free from stretch of DNA. It determines if the genes 3 is express or not. Once the protein has carried out its task, its helical structure unravels 4. Within seconds, it refolds into parallel structure ,which has new role. This time, in translation will help the some produce amoe essence(acids) for new proteins. The study is in the journal : Cell.
The next step is to find out if the amoe can refold into helix, after that, researchers want to see if protein similar to RFAH, which are present in all life on the earth. A capable and comparable molecular can torch(contortion) which mean a lot more bang for protein buck
1 binds
v.约束( bind的第三人称单数 )；装订；捆绑；（用长布条）缠绕
- Frost binds the soil. 霜使土壤凝结。 来自《简明英汉词典》
- Stones and cement binds strongly. 石头和水泥凝固得很牢。 来自《简明英汉词典》
2 DNA
(缩)deoxyribonucleic acid 脱氧核糖核酸
- DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
- Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。