long-livedmRNA

...In contrast, new protein synthesis also begins during the water absorption stage. The mRNA that is translated during the water absorption stage is produced during the seed formation process, but it is thought that at that point it is not translated and remains in the seed in the form of an information particle wrapped in a protein shell called an informosome (called a long-lived mRNA). Ribosomes are already present in the seed, and when water absorption begins, the protein of the information particle is removed and long-lived mRNA appears, which immediately binds to it to form polysomes and begin protein synthesis (Figure). ...

*Some of the terminology that refers to "long-lived mRNA" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…これに対し，吸水期にはタンパク質の新たな合成も始まる。吸水期に翻訳されるmRNAは種子形成過程で作られるが，その時点では翻訳されずタンパク質の殻で包まれた情報粒子informosomeの形で種子中にとどまるもの(long‐lived mRNAと呼ばれる)と考えられている。種子中にはあらかじめリボソームも存在しており，吸水が始まると情報粒子のタンパク質が取り除かれlong‐lived mRNAが出てくると，これと結合して直ちにポリソームを形成しタンパク質の合成が開始される(図)。…

※「long-lived mRNA」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報