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Literature summary for 2.6.1.80 extracted from

  • Beasley, J.T.; Bonneau, J.P.; Johnson, A.A.T.
    Characterisation of the nicotianamine aminotransferase and deoxymugineic acid synthase genes essential to Strategy II iron uptake in bread wheat (Triticum aestivum L.) (2017), PLoS ONE, 12, e0177061 .
    View publication on PubMedView publication on EuropePMC

Application

Application Comment Organism
agriculture the TaNAAT1, TaNAAT2 and TaDMAS1 genes provides a valuable genetic resource for improving bread wheat growth on Fe deficient soils and enhancing grain Fe nutrition Triticum aestivum

Cloned(Commentary)

Cloned (Comment) Organism
gene NAAT1-A, genetic organization, sequence comparisons, phylogenetic tree, the three TaNAAT1 genes are located on chromosomal group 1, quantitative reverse transcription-PCR enzyme expression analysis Triticum aestivum
gene NAAT1-B, genetic organization, sequence comparisons, phylogenetic tree, the three TaNAAT1 genes are located on chromosomal group 1, quantitative reverse transcription-PCR enzyme expression analysis Triticum aestivum
gene NAAT1-D, genetic organization, sequence comparisons, phylogenetic tree, the three TaNAAT1 genes are located on chromosomal group 1, quantitative reverse transcription-PCR enzyme expression analysis Triticum aestivum
gene NAAT2-A, genetic organization, sequence comparisons, phylogenetic tree, the three TaNAAT2 genes are located on chromosomal group 1, quantitative reverse transcription-PCR enzyme expression analysis Triticum aestivum
gene NAAT2-B, genetic organization, sequence comparisons, phylogenetic tree, the three TaNAAT2 genes are located on chromosomal group 1, quantitative reverse transcription-PCR enzyme expression analysis Triticum aestivum
gene NAAT2-D, genetic organization, sequence comparisons, phylogenetic tree, the three TaNAAT2 genes are located on chromosomal group 1, quantitative reverse transcription-PCR enzyme expression analysis Triticum aestivum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
nicotianamine + 2-oxoglutarate Triticum aestivum
-
3''-deamino-3''-oxonicotianamine + L-glutamate
-
?

Organism

Organism UniProt Comment Textmining
Triticum aestivum A0A1D5RTF7
-
-
Triticum aestivum A0A1D5RWZ6
-
-
Triticum aestivum A0A1D5SSY7
-
-
Triticum aestivum A0A1D5SWF7
-
-
Triticum aestivum A0A1X9QHH3
-
-
Triticum aestivum A0A1X9QHI5
-
-

Source Tissue

Source Tissue Comment Organism Textmining
anther
-
Triticum aestivum
-
anther high expression level Triticum aestivum
-
bract mature Triticum aestivum
-
bract mature, very low expression level Triticum aestivum
-
carpel
-
Triticum aestivum
-
carpel veryl low expression Triticum aestivum
-
caryopsis
-
Triticum aestivum
-
leaf from seedling Triticum aestivum
-
mesocotyl
-
Triticum aestivum
-
mesocotyl very low expression level Triticum aestivum
-
additional information TaNAAT2 genes are expressed at highest levels in anther tissues whilst the TaNAAT1 genes are expressed at highest levels in root tissues of bread wheat, tissue expression profile, overview Triticum aestivum
-
plant crown
-
Triticum aestivum
-
plant crown very low expression level Triticum aestivum
-
root from seedling and embryo Triticum aestivum
-
root from seedling and embryo, high expression level Triticum aestivum
-
seedling
-
Triticum aestivum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
nicotianamine + 2-oxoglutarate
-
Triticum aestivum 3''-deamino-3''-oxonicotianamine + L-glutamate
-
?

Synonyms

Synonyms Comment Organism
NAAT
-
Triticum aestivum
NAAT1-A
-
Triticum aestivum
NAAT1-B
-
Triticum aestivum
NAAT1-D
-
Triticum aestivum
NAAT2-A
-
Triticum aestivum
NAAT2-B
-
Triticum aestivum
NAAT2-D
-
Triticum aestivum
nicotianamine aminotransferase 1
-
Triticum aestivum
nicotianamine aminotransferase 2
-
Triticum aestivum
TaNAAT
-
Triticum aestivum

Cofactor

Cofactor Comment Organism Structure
pyridoxal 5'-phosphate
-
Triticum aestivum

Expression

Organism Comment Expression
Triticum aestivum TaNAAT1 and TaNAAT2 genes are differentially regulated by plant Fe status and their expression is significantly upregulated in root tissues from day five onwards during a seven-day Fe deficiency treatment up

General Information

General Information Comment Organism
evolution sequence structure and length of the TaNAAT1, TaNAAT2 and TaDMAS1 genes in Triticum aestivum cv. Gladius, comparison, phylogenetic tree, overview Triticum aestivum
metabolism iron (Fe) uptake in graminaceous plant species occurs via the release and uptake of Fe-chelating compounds known as mugineic acid family phytosiderophores (MAs). In the MAs biosynthetic pathway, nicotianamine aminotransferase (NAAT) and deoxymugineic acid synthase (DMAS, EC 1.1.1.285) enzymes catalyse the formation of 2'-deoxymugineic acid (DMA) from nicotianamine (NA). The TaNAAT1, TaNAAT2 and TaDMAS1 genes are differentially regulated by plant Fe status and their expression is significantly upregulated in root tissues from day five onwards during a seven-day Fe deficiency treatment. Expression levels of the TaNAAT1, TaNAAT2, and TaDMAS1 genes are temporally regulated in wheat roots to enable rapid DMA biosynthesis in response to Fe deficiency and avoid NA depletion Triticum aestivum
physiological function the nicotianamine aminotransferase and deoxymugineic acid synthase genes are essential to iron uptake in Triticum aestivum Triticum aestivum