Uptake of the Herbicidal Glyphosate by Escherichia coli K-12

Autor:	Elena Cherepenko, Oksana Karpenko
Rok vydání:	1999
Předmět:	chemistry.chemical_classification Strain (chemistry) Herbicides Dimethyl sulfoxide Glycine Biophysics Cell Biology Pesticide Biology medicine.disease_cause Biochemistry Amino acid chemistry.chemical_compound chemistry Glyphosate Escherichia coli medicine Aminoacid biosynthesis Molecular Biology
Zdroj:	Bioscience Reports. 19:43-49
ISSN:	1573-4935 0144-8463
DOI:	10.1023/a:1020198007883
Popis:	The uptake of the aminoacid biosynthesis inhibitor, used as the broad-spectrum herbicide ingredient, glyphosate (N-[phosphonomethyl]-glycine) was investigated in E. coli as a model to study mechanisms of cell resistance to antimetabolites as drugs and pesticides. Unlike the glyphosate-degrading Arthrobacter sp. strain for which the first successful measurement of glyphosate uptake and its inhibition by orthophosphate was reported [15], E. coli K-12 cannot take up this inhibitor either in the presence of orthophosphate, or after a prolonged starvation for it. However, cells made “competent” after an overnight cold CaCl2 exposure followed by dimethyl sulfoxide (DMSO) treatment could take up this compound (Km for glyphosate uptake, 274 μM). Neither amino acids, belonging to a single transport system, nor orthophosphate gave essential inhibition of glyphosate uptake by these cells.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2615ac3bc684ddfdf04813f9c5aa235e https://doi.org/10.1023/a:1020198007883 Zobrazit plný text záznamu Full text from SpringerLink