Proceedings of the Korean Society of Crop Science Conference (한국작물학회:학술대회논문집)
- 2017.06a
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- Pages.36-36
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- 2017
Molecular characterization and docking dynamics simulation prediction of cytosolic OASTL switch cysteine and mimosine expression in Leucaena leucocephala
- Harun-Ur-Rashid, Md. (The United Graduate School of Agricultural Sciences, Kagoshima University) ;
- Masakazu, Fukuta (Graduate School of Agriculture, University of the Ryukyus) ;
- Amzad Hossain, Md. (Graduate School of Agriculture, University of the Ryukyus) ;
- Oku, Hirosuke (Tropical Biosphere Research Center, University of the Ryukyus) ;
- Iwasaki, Hironori (Tropical Biosphere Research Center, University of the Ryukyus) ;
- Oogai, Shigeki (The United Graduate School of Agricultural Sciences, Kagoshima University) ;
- Anai, Toyoaki (Faculty of Agriculture, Saga University)
- Published : 2017.06.04
Abstract
Out of twenty common protein amino acids, there are many kinds of non protein amino acids (NPAAs) that exist as secondary metabolites and exert ecological functions in plants. Mimosine (Mim), one of those NPAAs derived from L. leucocephala acts as an iron chelator and reversely block mammalian cell cycle at G1/S phases. Cysteine (Cys) is decisive for protein and glutathione that acts as an indispensable sulfur grantor for methionine and many other sulfur-containing secondary products. Cys biosynthesis includes consecutive two steps using two enzymes-serine acetyl transferase (SAT) and O-acetylserine (thiol)lyase (OASTL) and appeared in plant cytosol, chloroplast, and mitochondria. In the first step, the acetylation of the