- Nicotianamine aminotransferase
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Nicotianamine aminotransferase Identifiers EC number 2.6.1.80 Databases IntEnz IntEnz view BRENDA BRENDA entry ExPASy NiceZyme view KEGG KEGG entry MetaCyc metabolic pathway PRIAM profile PDB structures RCSB PDB PDBe PDBsum Search PMC articles PubMed articles In enzymology, a nicotianamine aminotransferase (EC 2.6.1.80) is an enzyme that catalyzes the chemical reaction
- nicotianamine + 2-oxoglutarate
3"-deamino-3"-oxonicotianamine + L-glutamate
Thus, the two substrates of this enzyme are nicotianamine and 2-oxoglutarate, whereas its two products are 3''-deamino-3''-oxonicotianamine and L-glutamate.
This enzyme belongs to the family of transferases, specifically the transaminases, which transfer nitrogenous groups. The systematic name of this enzyme class is nicotianamine:2-oxoglutarate aminotransferase; nicotianamine transaminase. Other names in common use include NAAT, NAAT-I, NAAT-II, and NAAT-III.
References
- and Mori S; Higuchi, Kyoko; Nishizawa, Naoko-Kishi; Fushiya, Shinji; Chino, Mitsuo; Mori, Satoshi (1994). "Nicotianamine aminotransferase activities are correlated with the phytosiderophore secretions under Fe-deficient conditions in Gramineae". J. Exp. Bot. 45 (12): 1903–1906. doi:10.1093/jxb/45.12.1903.
- S; Yamaguchi, H; Nakanishi, H; Shioiri, T; Nishizawa, NK; Mori, S (1999). "Cloning Two Genes for Nicotianamine Aminotransferase, a Critical Enzyme in Iron Acquisition (Strategy II) in Graminaceous Plants". Plant. Physiol. 121 (3): 947–56. doi:10.1104/pp.121.3.947. PMC 59459. PMID 10557244. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=59459.
- Schaaf G, Ludewig U, Erenoglu BE, Mori S, Kitahara T, von Wiren N (2004). "ZmYS1 functions as a proton-coupled symporter for phytosiderophore- and nicotianamine-chelated metals". J. Biol. Chem. 279 (10): 9091–6. doi:10.1074/jbc.M311799200. PMID 14699112.
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