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New insights into HcPTR2A and HcPTR2B, two high-affinity peptide transporters from the ectomycorrhizal model fungus Hebeloma cylindrosporum.
- Source :
-
Mycorrhiza [Mycorrhiza] 2020 Nov; Vol. 30 (6), pp. 735-747. Date of Electronic Publication: 2020 Aug 20. - Publication Year :
- 2020
-
Abstract
- While plants mainly rely on the use of inorganic nitrogen sources like ammonium and nitrate, soil-borne microorganisms like the ectomycorrhizal fungus Hebeloma cylindrosporum can also take up soil organic N in the form of amino acids and peptides that they use as nitrogen and carbon sources. Following the previous identification and functional expression in yeast of two PTR-like peptide transporters, the present study details the functions and substrates of HcPTR2A and HcPTR2B by analysing their transport kinetics in Xenopus laevis oocytes. While both transporters mediated high-affinity di- and tripeptide transport, HcPTR2A also showed low-affinity transport of several amino acids-mostly hydrophobic ones with large side chains.
Details
- Language :
- English
- ISSN :
- 1432-1890
- Volume :
- 30
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Mycorrhiza
- Publication Type :
- Academic Journal
- Accession number :
- 32820366
- Full Text :
- https://doi.org/10.1007/s00572-020-00983-7