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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

NTR1 encodes a high affinity oligopeptide transporter in Arabidopsis.

Hterologous complementation of yeast mutants has enabled the isolation of genes encoding several families of amino acid transporters. Among them, NTR1 codes for a membrane protein with weak histidine transport activity. However, at the sequence level, NTR1 is related to rather non-specific oligopeptide transporters from a variety of species including Arabidopsis and to the Arabidopsis nitrate transporter CHL1. A yeast mutant deficient in oligopeptide transport was constructed allowing to show that NTR1 functions as a high affinity, low specificity peptide transporter. In siliques NTR1-expression is restricted to the embryo, implicating a role in the nourishment of the developing seed.[1]


  1. NTR1 encodes a high affinity oligopeptide transporter in Arabidopsis. Rentsch, D., Laloi, M., Rouhara, I., Schmelzer, E., Delrot, S., Frommer, W.B. FEBS Lett. (1995) [Pubmed]
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