PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 27152019-5 2016 Further analyses revealed that in leaf epidermal cells, XDH1 likely functions as an oxidase, along with the NADPH oxidases RbohD and RbohF, to generate superoxide, which is dismutated into H2O2 The resulting enrichment of H2O2 in the fungal haustorial complex within infected epidermal cells helps to constrain the haustorium, thereby contributing to RPW8-dependent and RPW8-independent powdery mildew resistance. Superoxides 152-162 xanthine dehydrogenase 1 Arabidopsis thaliana 56-60 19915948-0 2010 Xanthine dehydrogenase AtXDH1 from Arabidopsis thaliana is a potent producer of superoxide anions via its NADH oxidase activity. Superoxides 80-97 xanthine dehydrogenase 1 Arabidopsis thaliana 23-29 19915948-3 2010 By an alternative activity, AtXDH1 is capable of oxidizing NADH with concomitant formation of NAD(+) and superoxide. Superoxides 105-115 xanthine dehydrogenase 1 Arabidopsis thaliana 28-34 19915948-4 2010 Here we demonstrate that in comparison to the specific activity with xanthine as substrate, the specific activity of recombinant AtXDH1 with NADH as substrate is about 15-times higher accompanied by a doubling in superoxide production. Superoxides 213-223 xanthine dehydrogenase 1 Arabidopsis thaliana 129-135 19915948-6 2010 Rather, each sub-activity is determined by specific conditions such as the availability of substrates and co-substrates, which allows regulation of superoxide production by AtXDH1. Superoxides 148-158 xanthine dehydrogenase 1 Arabidopsis thaliana 173-179 19915948-7 2010 Since AtXDH1 exhibits the most pronounced NADH oxidase activity among all xanthine dehydrogenase proteins studied thus far, our results imply that in particular by its NADH oxidase activity AtXDH1 is an efficient producer of superoxide also in vivo. Superoxides 225-235 xanthine dehydrogenase 1 Arabidopsis thaliana 6-12 19915948-7 2010 Since AtXDH1 exhibits the most pronounced NADH oxidase activity among all xanthine dehydrogenase proteins studied thus far, our results imply that in particular by its NADH oxidase activity AtXDH1 is an efficient producer of superoxide also in vivo. Superoxides 225-235 xanthine dehydrogenase 1 Arabidopsis thaliana 190-196 14726515-11 2004 Finally it was found that AtXDH1 is a strict dehydrogenase and not an oxidase, but is able to produce superoxide radicals indicating that besides purine catabolism it might also be involved in response to various stresses that require reactive oxygen species. Superoxides 102-121 xanthine dehydrogenase 1 Arabidopsis thaliana 26-32