1.7.7.1 hydroxylamine + reduced ferredoxin - Spinacia oleracea NH3 + H2O + oxidized ferredoxin - ? 376975 1.7.7.1 hydroxylamine + reduced ferredoxin hydroxylamine can serve as an electron-accepting substrate for the enzyme and the product of hydroxylamine reduction is ammonia. Hydroxylamine, bound to the enzyme, can serve as a late intermediate during the reduction of nitrite to ammonia catalyzed by the enzyme Chlamydomonas reinhardtii ammonia + H2O + oxidized ferredoxin - ? 426493 1.7.7.1 additional information no activity with NADH as electron donor Haloferax mediterranei ? - ? 89 1.7.7.1 additional information presence of two separate one-electron redox couples with Em values of -255 mV and -390 mV, respcetively Chlamydomonas reinhardtii ? - ? 89 1.7.7.1 additional information enzyme additionally shows activity of sulfite reductase, EC 1.8.7.1 Cyanidioschyzon merolae ? - ? 89 1.7.7.1 additional information enzyme additionally shows activity of sulfite reductase, EC 1.8.7.1 Cyanidioschyzon merolae 10D ? - ? 89 1.7.7.1 additional information no activity with NADH as electron donor Haloferax mediterranei DSM 1411 ? - ? 89 1.7.7.1 NH3 + H2O + oxidized ferredoxin - Chlamydomonas reinhardtii nitrite + reduced ferredoxin + H+ - r 451740 1.7.7.1 NH3 + H2O + oxidized ferredoxin - Spinacia oleracea nitrite + reduced ferredoxin + H+ - r 451740 1.7.7.1 NH3 + H2O + oxidized ferredoxin - Arthrospira platensis nitrite + reduced ferredoxin + H+ - r 451740 1.7.7.1 NH3 + H2O + oxidized ferredoxin - Phormidium laminosum nitrite + reduced ferredoxin + H+ - r 451740 1.7.7.1 NH3 + H2O + oxidized ferredoxin - Chlorolobion braunii nitrite + reduced ferredoxin + H+ - r 451740 1.7.7.1 NH3 + H2O + oxidized ferredoxin - Neopyropia yezoensis nitrite + reduced ferredoxin + H+ - r 451740 1.7.7.1 nitrite + 6 reduced Fdx2 Fdx2 i.e. Chlamydomonas reinhardtii plant-type isoform ferredoxin 2 Synechocystis sp. PCC 6803 ammonia + 2 H2O + 6 oxidized Fdx2 - ? 461255 1.7.7.1 nitrite + 6 reduced Fdx2 Fdx2 i.e. Chlamydomonas reinhardtii plant-type isoform ferredoxin 2. Fdx2 is a more specific electron donor to NiR than ferredoxin Chlamydomonas reinhardtii ammonia + 2 H2O + 6 oxidized Fdx2 - ? 461255 1.7.7.1 nitrite + 6 reduced ferredoxin - Chlamydomonas reinhardtii ammonia + 2 H2O + 6 oxidized ferredoxin - ? 426843 1.7.7.1 nitrite + 6 reduced ferredoxin - Synechocystis sp. ammonia + 2 H2O + 6 oxidized ferredoxin - ? 426843 1.7.7.1 nitrite + 6 reduced ferredoxin - Synechocystis sp. PCC 6803 ammonia + 2 H2O + 6 oxidized ferredoxin - ? 426843 1.7.7.1 nitrite + 6 reduced ferredoxin + 7 H+ - Arabidopsis thaliana NH3 + 2 H2O + 6 oxidized ferredoxin - ? 427495 1.7.7.1 nitrite + 6 reduced ferredoxin + 7 H+ - Cyanidioschyzon merolae NH3 + 2 H2O + 6 oxidized ferredoxin - ? 427495 1.7.7.1 nitrite + 6 reduced ferredoxin + 7 H+ assimilatory nitrite reductase Haloferax mediterranei NH3 + 2 H2O + 6 oxidized ferredoxin - ? 427495 1.7.7.1 nitrite + 6 reduced ferredoxin + 7 H+ ferredoxin is almost as efficient as methyl viologen as electron donor Haloferax mediterranei NH3 + 2 H2O + 6 oxidized ferredoxin - ? 427495 1.7.7.1 nitrite + 6 reduced ferredoxin + 7 H+ - Cyanidioschyzon merolae 10D NH3 + 2 H2O + 6 oxidized ferredoxin - ? 427495 1.7.7.1 nitrite + 6 reduced ferredoxin + 7 H+ assimilatory nitrite reductase Haloferax mediterranei DSM 1411 NH3 + 2 H2O + 6 oxidized ferredoxin - ? 427495 1.7.7.1 nitrite + 6 reduced ferredoxin + 7 H+ ferredoxin is almost as efficient as methyl viologen as electron donor Haloferax mediterranei DSM 1411 NH3 + 2 H2O + 6 oxidized ferredoxin - ? 427495 1.7.7.1 nitrite + FADH2 50% of maximum activity compared to reduced methyl viologen as electron donor Haloferax mediterranei NH3 + FAD + H2O - ? 428839 1.7.7.1 nitrite + FADH2 50% of maximum activity compared to reduced methyl viologen as electron donor Haloferax mediterranei DSM 1411 NH3 + FAD + H2O - ? 428839 1.7.7.1 nitrite + NADPH + H+ - Cyberlindnera jadinii NH3 + NADP+ + H2O - r 428840 1.7.7.1 nitrite + NADPH + H+ 10% of maximum activity compared to reduced methyl viologen as electron donor Haloferax mediterranei NH3 + NADP+ + H2O - ? 428840 1.7.7.1 nitrite + reduced 2,6-dichlorophenolindophenol less than 35% of maximum activity compared to reduced methyl viologen as electron donor Haloferax mediterranei NH3 + oxidized 2,6-dichlorophenolindophenol + H2O - ? 428841 1.7.7.1 nitrite + reduced ferredoxin - Phaseolus vulgaris ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Synechococcus elongatus PCC 7942 = FACHB-805 ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Chlamydomonas reinhardtii ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Hordeum vulgare ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Zea mays ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - [Chlorella] fusca ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Cucurbita pepo ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Oryza sativa ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Arthrospira platensis ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Anabaena cylindrica ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Phormidium laminosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Allium tuberosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Symphytum officinale ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Dunaliella tertiolecta ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Neopyropia yezoensis ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Vigna angularis ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin NADH Phormidium laminosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin NADPH Cyberlindnera jadinii ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin NADPH Phormidium laminosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: methyl viologen Chlamydomonas reinhardtii ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: methyl viologen Cyberlindnera jadinii ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: methyl viologen Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: methyl viologen [Chlorella] fusca ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: methyl viologen Cucurbita pepo ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: methyl viologen Phormidium laminosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: methyl viologen Neopyropia yezoensis ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin electrostatic interactions between ferredoxin and nitrite reductase play an important role in the reaction mechanism Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin enzyme forms a covalent adduct with ferredoxin Chlamydomonas reinhardtii ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donors: flavodoxin Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donors: flavodoxin [Chlorella] fusca ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donors: flavodoxin Cucurbita pepo ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donors: flavodoxin Phormidium laminosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donors: flavodoxin Neopyropia yezoensis ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate [Chlorella] fusca ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate Cucurbita pepo ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin enzyme can also catalyze the reduction of hydroxylamine to ammonia, at lower rate Neopyropia yezoensis ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin NADH or NADPH can not serve as electron donors [Chlorella] fusca ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin methyl viologen can serve as a less effective electron donor Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin methyl viologen can serve as a less effective electron donor Neopyropia yezoensis ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin not: flavin Phormidium laminosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: benzyl viologen Chlamydomonas reinhardtii ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin other electron donor: benzyl viologen Phormidium laminosum ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second enzyme of photosynthetic nitrate-reducing system Synechococcus elongatus PCC 7942 = FACHB-805 ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second enzyme of photosynthetic nitrate-reducing system Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second enzyme of photosynthetic nitrate-reducing system [Chlorella] fusca ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second enzyme of photosynthetic nitrate-reducing system Cucurbita pepo ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second enzyme of photosynthetic nitrate-reducing system Anabaena cylindrica ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second enzyme of photosynthetic nitrate-reducing system Dunaliella tertiolecta ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second step of nitrate assimilation Spinacia oleracea ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin second step of nitrate assimilation [Chlorella] fusca ammonia + oxidized ferredoxin - ? 260236 1.7.7.1 nitrite + reduced ferredoxin - Spinacia oleracea NH3 + H2O + oxidized ferredoxin - ? 375208 1.7.7.1 nitrite + reduced ferredoxin - Nicotiana tabacum NH3 + H2O + oxidized ferredoxin - ? 375208 1.7.7.1 nitrite + reduced ferredoxin - Oryza sativa NH3 + H2O + oxidized ferredoxin - ? 375208 1.7.7.1 nitrite + reduced ferredoxin - Chlorolobion braunii NH3 + H2O + oxidized ferredoxin - ? 375208 1.7.7.1 nitrite + reduced ferredoxin a severe suppression of nitrite reductase by antisense technology drastically reduces the growth and development of transformed tobacco plants Nicotiana tabacum NH3 + H2O + oxidized ferredoxin - ? 375208 1.7.7.1 nitrite + reduced ferredoxin electrons from ferredoxin are first transferred to the [4Fe-4S] cluster, then to the siroheme and finally to the substrate Spinacia oleracea NH3 + H2O + oxidized ferredoxin - ? 375208 1.7.7.1 nitrite + reduced methyl viologen - Chlamydomonas reinhardtii NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen - Cyberlindnera jadinii NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen - Spinacia oleracea NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen - Oryza sativa NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen - Arthrospira platensis NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen - Phormidium laminosum NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen - Chlorolobion braunii NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen - Nicotiana tabacum NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen ferredoxin is almost as efficient as methyl viologen as electron donor Haloferax mediterranei NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced methyl viologen ferredoxin is almost as efficient as methyl viologen as electron donor Haloferax mediterranei DSM 1411 NH3 + H2O + oxidized methyl viologen - ? 377374 1.7.7.1 nitrite + reduced phenazine methosulphate less than 35% of maximum activity compared to reduced methyl viologen as electron donor Haloferax mediterranei NH3 + oxidized phenazine methosulphate + H2O - ? 428842