2017最新科學英文演講稿范文
Secret identities aren’t just for superheroes anymore. Researchers have found that a protein present in everything from amoebas to people is living a double life. Once it binds to DNA, the protein, called RfaH, rips apart—and then refolds into a different shape, to do a different job.
RfaH is a transcription protein—attached to or freed from a stretch of DNA, it determines if a gene is expressed or not. But once the protein has carried out its task, its helical structure unravels. Within seconds, it refolds into a barrel structure, which has a new role, this time in translation, where it helps the cell produce amino acids for new proteins. The study is in the journal Cell.
[Bjrn M. Burmann et al, An α Helix to β Barrel Domain Switch Transforms the Transcription Factor RfaH into a Translation Factor]
The next step is to find out if the barrel can refold into the helix. After that, researchers want to see if proteins similar to RfaH—which are present in all life on Earth—are capable of comparable molecular contortion. Which would mean a lot more bang for our protein buck.
—Ian Chant
【2017最新科學英文演講稿范文】相關文章：
2017最新英文求職信范文01-05
2017最新英文簡歷01-14
2017最新畢業生英文簡歷范文09-02
2017最新研究生英文簡歷范文12-11
2017最新科學汽車保養知識10-29
2017最新英文簡歷模板09-05
最新英文演講稿的格式及范文11-29
2017最新英文求職信范本02-12
2017最新英文求職信模版01-04
英文簡歷范文專科學歷08-10