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Arabidopsis mutants lacking asparaginases develop normally but exhibit enhanced root inhibition by exogenous asparagine.

Amino acids - 1 Jun 2012

Ivanov Ana, Kameka Alexander, Pajak Agnieszka, Bruneau Luanne, Beyaert Ronald, Hernández-Sebastià Cinta, Marsolais Frédéric

Abstract excerpt

Asparaginase catalyzes the degradation of L-asparagine to L-aspartic acid and ammonia, and is implicated in the catabolism of transported asparagine in sink tissues of higher plants. The Arabidopsis genome includes two genes, ASPGA1 and ASPGB1, belonging to distinct asparaginase subfamilies. Conditions of severe nitrogen limitation resulted in a slight decrease in seed size in wild-type Arabidopsis. However, this...

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PMID: 21800258
DOI: 10.1007/s00726-011-0973-4

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