Nicotianamine aminotransferase

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

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.
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.

Transferase: nitrogenous groups (EC 2.6)

2.6.1: Transaminases	Aspartate transaminase GOT1 GOT2 Alanine transaminase GABA transaminase Tyrosine aminotransferase Ornithine aminotransferase Branched chain aminotransferase Alanine—glyoxylate transaminase AGXT

2.6.3: Oximinotransferases	Oximinotransferase

2.6.99: Other	Pyridoxine 5'-phosphate synthase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list)

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