EC 1.16.1.7

Reaction: 2 Fe(II)-siderophore + NAD⁺ + H⁺ = 2 Fe(III)-siderophore + NADH

Other name(s): ferric chelate reductase (ambiguous); iron chelate reductase (ambiguous); NADH:Fe³⁺-EDTA reductase; NADH₂:Fe³⁺ oxidoreductase; ferB (gene name); Fe(II):NAD⁺ oxidoreductase

Systematic name: Fe(II)-siderophore:NAD⁺ oxidoreductase

Comments: Contains FAD. The enzyme catalyses the reduction of bound ferric iron in a variety of iron chelators (siderophores), resulting in the release of ferrous iron. The plant enzyme is Involved in the transport of iron across plant plasma membranes. The enzyme from the bacterium Paracoccus denitrificans can also reduce chromate. cf. EC 1.16.1.9, ferric-chelate reductase (NADPH) and EC 1.16.1.10, ferric-chelate reductase [NAD(P)H].

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 120720-17-4

References:

1. Askerlund, P., Larrson, C. and Widell, S. Localization of donor and acceptor sites of NADH dehydrogenase activities using inside-out and right-side-out plasma membrane vesicles from plants. FEBS Lett. 239 (1988) 23-28.

2. Brüggemann, W. and Moog, P.R. NADH-dependent Fe³⁺ EDTA and oxygen reduction by plasma membrane vesicles from barley roots. Physiol. Plant. 75 (1989) 245-254.

3. Brüggemann, W., Moog, P.R., Nakagawa, H., Janiesch, P. and Kuiper, P.J.C. Plasma membrane-bound NADH:Fe³⁺-EDTA reductase and iron deficiency in tomato (Lycopersicon esculentum). Is there a Turbo reductase ? Physiol. Plant. 79 (1990) 339-346.

4. Buckhout, T.J. and Hrubec, T.C. Pyridine nucleotide-dependent ferricyanide reduction associated with isolated plasma membranes of maize (Zea mays L.) roots. Protoplasma 135 (1986) 144-154.

5. Sandelius, A.S., Barr, R., Crane, F.L. and Morré, D.J. Redox reactions of plasma membranes isolated from soybean hypocotyls by phase partition. Plant Sci. 48 (1986) 1-10.

6. Mazoch, J., Tesarik, R., Sedlacek, V., Kucera, I. and Turanek, J. Isolation and biochemical characterization of two soluble iron(III) reductases from Paracoccus denitrificans. Eur. J. Biochem. 271 (2004) 553-562. [PMID: 14728682]