1.7.7.1: ferredoxin-nitrite reductase

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For detailed information about ferredoxin-nitrite reductase, go to the full flat file.

Reaction

Synonyms

aNiR, assimilatory NiR, assimilatory nitrite reductase, CYME_CMG021C, CYME_CMJ117C, ferredoxin-nitrite reductase, ferredoxin:nitrite oxidoreductase, ferredoxin:nitrite reductase, Nii1, nii3, nii4, NiR, NiR1, NirA, nitrite reductase, NrfA, NrfH, reductase, ferredoxin-nitrite, SiRA, SirB

ECTree

     1 Oxidoreductases

         1.7 Acting on other nitrogenous compounds as donors

             1.7.7 With an iron-sulfur protein as acceptor

                1.7.7.1 ferredoxin-nitrite reductase

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Results	in table
2	Activating Compound
940	AA Sequence
1	CAS Registry Number
11	Cloned(Commentary)
21	Cofactor
6	Crystallization (Commentary)
2	Expression
3	General Information
4	General Stability
52	Inhibitors
15	kcat/KM [mM/s]
53	KM Value [mM]
15	Localization
20	Metals/Ions
47	Molecular Weight [Da]
22	Natural Substrates/ Products (Substrates)
85	Organism
6	Pathway
22	PDB ID
22	pH Optimum
2	pH Range
1	pH Stability
1	Posttranslational Modification
21	Protein Variants
38	Purification (Commentary)
13	Reaction
3	Reaction Type
82	Reference
25	Source Tissue
30	Specific Activity [micromol/min/mg]
8	Storage Stability
129	Substrates and Products (Substrate)
18	Subunits
30	Synonyms
1	Systematic Name
4	Temperature Optimum [°C]
6	Temperature Stability [°C]
23	Turnover Number [1/s]

Crystallization

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Crystallization on EC 1.7.7.1 - ferredoxin-nitrite reductase

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CRYSTALLIZATION (Commentary)

ORGANISM

UNIPROT

LITERATURE

modeling of structure based on spinach nitrite reductase. Arginine and lysine residues are involved in electrostatically-stabilized binding to ferredoxin

Chlamydomonas reinhardtii

A8J4P1

726101

the biological unit, NrfH2NrfA4, houses 28 c-type heme groups, 22 of them with low spin and 6 with pentacoordinated high spin configuration. The high spin hemes, which are the electron entry and exit points of the complex, carry a highly unusual coordination for c-type hemes, lysine and methionine as proximal ligands in NrfA and NrfH, respectively. The midpoint redox potential of the NrfH menaquinol-interacting methionine-coordinated heme is -270 mV

Desulfovibrio vulgaris

Q72EF3

725783

the biological unit, NrfH2NrfA4, houses 28 c-type heme groups, 22 of them with low spin and 6 with pentacoordinated high spin configuration. The high spin hemes, which are the electron entry and exit points of the complex, carry a highly unusual coordination for c-type hemes, lysine and methionine as proximal ligands in NrfA and NrfH, respectively. The redox potential of the catalytic lysine-coordinated high spin heme of NrfA is -50 mV

Desulfovibrio vulgaris

Q72EF3

725783

wild-type, to 1.25 A resolution and mutants Q448K, M175E, M175G, M175K to 2.0, 1.7. 1.7, 19 A resolution, respectively. The structure provides detailed geometries for the [4Fe–4S] cluster and the siroheme prosthetic groups

Nicotiana tabacum

Q76KA9, Q76KB0

726450

sitting drop vapour diffusion method

Spinacia oleracea

-

672005

NMR-study of protein-protein interaction of ferredoxin and nitrite reductase shows three acidic regions of ferredoxin to be major sites for the interaction with the enzyme, indicating that the complex is stabilized through electrostatic interaction

Synechocystis sp.

-

725315