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Ca2+
-
1.2 gatom per mol of MoFe protein
Cu2+
-
1.4 gatom per mol of MoFe protein
Tungsten
-
can partially, about 25%, substitute for molybdenum, isolation of a tungsten-substituted enzyme after growth of the cells in tungsten-supplemented and molybdenum-deficient medium
Zn2+
-
0.8 gatom per mol of MoFe protein
Co2+
-
can replace Mg2+, but is less effective
Co2+
-
divalent cation requirement is satisfied by Co2+, is best supported by concentrations of divalent cation one-half the concentration of ATP
Fe
-
molybdenum-iron protein component and an iron protein component with an iron-molybdenum cofactor center. Schematic structure of the alpha2-dimeric Fe protein, which contains a [Fe4S4] cluster at the subunit interface and an MgATP binding site within each subunit, overview
Fe
-
in the active site iron-molybdenum cofactor, and as 4Fe-4S cluster in the Fe protein
Fe2+
-
-
Fe2+
-
can replace Mg2+, but is less effective
Fe2+
-
divalent cation requirement is satisfied by Fe2+, is best supported by concentrations of divalent cation one-half the concentration of ATP
Fe2+
-
in [Fe-S] clusters
Fe2+
-
part of the iron-molybdenum and molybdenum-iron cofactors
Fe2+
-
different VO2+-nucleotide coordination environments exist for the Fe-protein Kp2 that depend on pH and are distinguishable by EPR spectroscopy, Kp2 structure, overview
Fe2+
-
nitrogenase Fe protein, the FeS cluster exhibits very little change upon MgATP binding, two bound nucleotides are believed to mediate the diverse, functionally essential structural rearrangements in the Fe protein
Fe2+
-
as part of the Fe protein in the MoFe protein, [4Fe-4S] clusters
Iron
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein, MoFe protein, component I, dinitrogenase, and an iron containing protein, Fe protein, component II, dinitrogenase reductase, together they form the active nitrogenase complex
Iron
-
17-19 atoms of iron per molecule of MoFe protein, overview
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
4 atoms of iron per molecule of Fe protein
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
contains [4Fe4S] cluster
Iron
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein, MoFe protein, component I, dinitrogenase, and an iron containing protein, Fe protein, component II, dinitrogenase reductase, together they form the active nitrogenase complex
Iron
-
iron content of MoFe protein: 30
Iron
-
the MoFe protein contains 2 molybdenum, about 30 iron and 30 inorganic sulphur atoms, 16 of the 30 Fe atoms are associated with S2- in four cubic [4Fe-4S] clusters, the remaining metal atoms are arranged in two copies of a cofactor called FeMo cofactor, FeMoCo, with a minimum stoichiometry of MoFe6S8-9
Iron
-
characterization of the metal clusters in the nitrogenase molybdenum-iron and vanadium-iron proteins
Iron
-
17-19 atoms of iron per molecule of MoFe protein, overview
Iron
-
4 atoms of iron per molecule of Fe protein
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
VFe protein form 1 is an incomplete form that contains only 1 cofactor and 1 [4Fe-4S] cluster with an additional [Fe4-S4]-like cluster
Iron
-
reduction kinetics
Iron
-
contains [4Fe4S] cluster
Iron
-
dependent on, the enzyme complex contains a molybdenum-iron protein harboring the active site, the enzyme complex contains also a dimeric iron protein
Iron
dependent on, the enzyme complex contains a molybdenum-iron, a tetramer with 2 different subunits and 4 organo-metallic clusters, i.e. 2 iron-molybdenum cofactors and 2 P-clusters encoded by the genes nifD and nifK, the enzyme complex contains also a dimeric iron protein, encoded by the nifH gene, with a [4Fe4S] cluster between subunits and 2 MgATP binding sites, mechanism of electron transfer between metal clusters, mechanism of switch I and II, complex formation with the MoFe protein, also between different species, overview
Iron
-
enzyme contains a [7Fe9S-Mo-X-homocitrate] metallocluster, 1 of 2 different models proposes one or more Fe atoms in the Mo cofactor to be responsible for substrate binding
Iron
-
enzyme contains an iron-molybdenum cofactor
Iron
-
freeze-trapping the FeMo-cofactor in a S=1/2 state with hydrazine as substrate in mutant V70A/H195Q. The trapped intermediate incorporates a hydrazine-derived species bound to the FeMo-cofactor
Iron
in FeMo cofactor and MoFe protein
Iron
-
in the FeMo cofactor
Iron
-
in the MoFe protein and the Fe protein
Iron
contains iron and a Fe-Mo cofactor (the active site, a [7Fe:9S:Mo:C:R-homocitrate] cluster)
Iron
-
17-19 atoms of iron per molecule of MoFe protein, overview
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
4 atoms of iron per molecule of Fe protein
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
17-19 atoms of iron per molecule of MoFe protein, overview
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
reduction kinetics
Iron
-
contains [4Fe4S] cluster
Iron
contains iron and a Fe-Mo cofactor (the active site, a [7Fe:9S:Mo:C:R-homocitrate] cluster)
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
iron content of the iron protein: 3.5
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
Gloeocapsa sp.
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
component Gd1, iron and molybdenum in a 12:1 ratio. Component Gd2, 3.9 Fe atoms per molecule
Iron
-
dependent on, the enzyme complex contains a molybdenum-iron, a tetramer with 2 different subunits and 4 organo-metallic clusters, i.e. 2 iron-molybdenum cofactors and 2 P-clusters, the enzyme complex contains also a homodimeric iron protein encoded by the nifH gene
Iron
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein, MoFe protein, component I, dinitrogenase, and an iron containing protein, Fe protein, component II, dinitrogenase reductase, together they form the active nitrogenase complex
Iron
-
17-19 atoms of iron per molecule of MoFe protein, overview
Iron
-
4 atoms of iron per molecule of Fe protein
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
17.5 gatom per mol of MoFe protein
Iron
-
dependent on, the enzyme complex contains a molybdenum-iron protein, and a dimeric iron protein
Iron
contains iron and a Fe-Mo cofactor (the active site, a [7Fe:9S:Mo:C:R-homocitrate] cluster)
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
24 atoms of iron per molecule of MoFe protein
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
22.5 atoms of iron per molecule of protein
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein, MoFe protein, component I, dinitrogenase, and an iron containing protein, Fe protein, component II, dinitrogenase reductase, together they form the active nitrogenase complex
Iron
-
2.7-4.1 mol per mol of Fe protein
Iron
-
27.7 atoms of iron per molecule of MoFe protein
Iron
-
the iron-only enzyme consists of 2 components: Fe protein and FeFe protein, the latter contains 26 Fe atoms per molecul of protein
Iron
-
required, part of the MoFe protein cofactor
Iron
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein, MoFe protein, component I, dinitrogenase, and an iron containing protein, Fe protein, component II, dinitrogenase reductase, together they form the active nitrogenase complex
Iron
-
18-36 atoms of iron per molecule of MoFe protein , overview
Iron
-
20 atoms of iron per molecule of MoFe protein
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
divalent metal requirement is satisfied by Mg2+, reaction is best supported by concentration of divalent cation one-half the concentration of ATP
Mg2+
-
Mg2+ required for MgATP complex
440138, 440144, 440145, 440146, 440147, 440158, 440166, 440174, 440175, 440178, 440180, 440182, 440184, 440186, 440187
Mg2+
required for ATP binding and MgATP hydrolysis, 2 MgATP binding sites on the iron protein connected via residues K15, D125, and C132, binding changes the conformation and the redox status of the [4Fe4S] cluster of the iron protein, mechanism, overview
Mg2+
-
MgATP2- is required
Mg2+
-
5 mM MgCl2 used in assay conditions
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
Chromatium sp.
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
Gloeocapsa sp.
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
1.8 gatom per mol of MoFe protein
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
required, the FeS cluster exhibits very little change upon MgATP binding
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mg2+
-
Mg2+ required for MgATP complex
Mn2+
-
can replace Mg2+, but is less effective
Mn2+
-
divalent cation requirement is satisfied by Mn2+, is best supported by concentrations of divalent cation one-half the concentration of ATP
Mo
-
molybdenum-iron protein component with an iron-molybdenum cofactor center. Schematic structureof the alpha2beta2-tetrameric MoFe protein, which contains a pair of unique clusters in each ab-subunit dimer, the P-cluster ([Fe8S7]) at the alphabeta-subunit interface, and the FeMoco ([MoFe7S9X], where X=C,N, or O) within the alpha-subunit
Mo
-
in the active site iron-molybdenum cofactor
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein (MoFe protein, component I, dinitrogenase) and an iron containing protein (Fe protein, component II, dinitrogenase reductase), together they form the active nitrogenase complex
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
MoFe-cofactor contains 2 clusters of composition [4Fe-3S] and [1Mo-3Fe-3S] that are brigded by 3 nonprotein ligands
Molybdenum
-
23 mol Fe + 1.9 mol Mo per mol of MoFe protein
Molybdenum
-
in the FeMoco cofactor of the MoFe protein
Molybdenum
contains molybdenum
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
characterization of the metal clusters in the nitrogenase molybdenum-iron protein
Molybdenum
-
review on molybdenum in nitrogenase
Molybdenum
-
molybdenum metabolism, cofactor synthesis from nif genes , regulation and structure, overview
Molybdenum
-
2 gatom per mol of MoFe protein
Molybdenum
-
also possesses Mo-independent nitrogenases: one vanadium containing nitrogenase and another lacking both molybdenum and vanadium
Molybdenum
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein (MoFe protein, component I, dinitrogenase) and an iron containing protein (Fe protein, component II, dinitrogenase reductase), together they form the active nitrogenase complex
Molybdenum
-
MoFe-cofactor contains 2 clusters of composition [4Fe-3S] and [1Mo-3Fe-3S] that are brigded by 3 nonprotein ligands
Molybdenum
-
mol Mo per mol MoFeprotein: wild-type and mutant H195Q 1.9, mutant H195N and Q191K 0.9
Molybdenum
-
dependent on, the enzyme complex contains a molybdenum-iron protein harboring the active site, the cofactor is composed of a [Mo-3Fe-3S] subcluster and a [4Fe3S] subcluster bridged by 3 sulfide pairs, with homocitrate bound to the molybdenum, structure determination and analysis
Molybdenum
dependent on, the enzyme complex contains a molybdenum-iron, a tetramer with 2 different subunits and 4 organo-metallic clusters, i.e. 2 iron-molybdenum cofactors [7Fe-Mo-9S-X-homocitrate] and 2 P-clusters [8Fe-7S], mechanism of electron transfer between metal clusters, complex formation with the Fe protein, also between different species, overview
Molybdenum
-
enzyme contains a [7Fe9S-Mo-X-homocitrate] metallocluster, where X can be an N atom, 1 of 2 different models proposes molydenum as the substrate binding partner in the active site
Molybdenum
-
enzyme contains an iron-molybdenum cofactor
Molybdenum
-
freeze-trapping the FeMo-cofactor in a S=1/2 state with hydrazine as substrate in mutant V70A/H195Q. The trapped intermediate incorporates a hydrazine-derived species bound to the FeMo-cofactor
Molybdenum
-
part of the iron-molybdenum and molybdenum-iron cofactors
Molybdenum
in FeMo cofactor and MoFe protein
Molybdenum
-
in the FeMo cofactor
Molybdenum
-
in the MoFe protein
Molybdenum
contains a Fe-Mo cofactor (the active site, a [7Fe:9S:Mo:C:R-homocitrate] cluster)
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
Chromatium sp.
-
-
Molybdenum
Chromatium sp.
-
molybdenum metabolism, cofactor synthesis from nif genes , regulation and structure, overview
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
review on molybdenum in nitrogenase
Molybdenum
-
molybdenum metabolism, cofactor synthesis from nif genes , regulation and structure, overview
Molybdenum
-
MoFe-cofactor contains 2 clusters of composition [4Fe-3S] and [1Mo-3Fe-3S] that are brigded by 3 nonprotein ligands
Molybdenum
contains a Fe-Mo cofactor (the active site, a [7Fe:9S:Mo:C:R-homocitrate] cluster)
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
Cyanobacterium sp.
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein (MoFe protein, component I, dinitrogenase) and an iron containing protein (Fe protein, component II, dinitrogenase reductase), together they form the active nitrogenase complex
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
Gloeocapsa sp.
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
component Gd1, iron and molybdenum in a 12:1 ratio, molybdenum content is 1.4 atoms per enzyme tetramer
Molybdenum
-
dependent on, the enzyme complex contains a molybdenum-iron, a tetramer with 2 different subunits and 4 organo-metallic clusters, i.e. 2 iron-molybdenum cofactors and 2 P-clusters
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
review on molybdenum in nitrogenase
Molybdenum
-
6 iron atoms to 1 molybdenum atom in MoFe protein
Molybdenum
-
molybdenum metabolism, cofactor synthesis from nif genes , regulation and structure, overview
Molybdenum
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein (MoFe protein, component I, dinitrogenase) and an iron containing protein (Fe protein, component II, dinitrogenase reductase), together they form the active nitrogenase complex
Molybdenum
-
1 gatom per mol of MoFe protein
Molybdenum
-
dependent on, the enzyme complex contains a molybdenum-iron protein harboring the active site
Molybdenum
contains a Fe-Mo cofactor (the active site, a [7Fe:9S:Mo:C:R-homocitrate] cluster)
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
2 gatom per mol of MoFe protein
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
review on molybdenum in nitrogenase
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
1.2-1.3 gatom per mol of MoFe protein
Molybdenum
-
molybdenum metabolism, cofactor synthesis from nif genes , regulation and structure, overview
Molybdenum
-
1.2-1.3 gatom per mol of MoFe protein
Molybdenum
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein (MoFe protein, component I, dinitrogenase) and an iron containing protein (Fe protein, component II, dinitrogenase reductase), together they form the active nitrogenase complex
Molybdenum
-
required, part of the MoFe protein cofactor, can be partially, about 25%, substituted by tungsten, Mo content quantification, overview, Mo cannot be substituted by rhenium
Molybdenum
-
1-2 gatom per mol of MoFe protein , overview
Molybdenum
-
1.7 gatom per mol of MoFe protein
Molybdenum
-
enzyme consists of 2 proteins: a molybdenum and iron-containing protein (MoFe protein, component I, dinitrogenase) and an iron containing protein (Fe protein, component II, dinitrogenase reductase), together they form the active nitrogenase complex
Ni2+
-
can replace Mg2+, but is less effective
Ni2+
-
divalent cation requirement is satisfied by Ni2+, is best supported by concentrations of divalent cation one-half the concentration of ATP
Vanadium
-
characterization of the metal clusters in the nitrogenase vanadium-iron protein
Vanadium
-
possesses 2 molybdenum-independent nitrogenases: one vanadium-containing nitrogenase and another lacking both molybdenum and vanadium
Vanadium
-
in the FeVco cofactor
Vanadium
-
VFe protein form 1 is an incomplete form that contains only 1 cofactor and 1 [4Fe-4S] cluster with an additional [Fe4-S4]-like cluster
Vanadium
-
2 forms of VFe protein: form 1 has V-toFe ratio of 1:19, form 2 of 1:15
Vanadium
-
characterization of the metal clusters in the nitrogenase vanadium-iron protein
Vanadium
-
possesses 2 molybdenum-independent nitrogenases: one vanadium-containing nitrogenase and another lacking both molybdenum and vanadium
Vanadium
-
characterization of the metal clusters in the nitrogenase vanadium-iron protein
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
-
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
structure and organization of metal clusters
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
-
additional information
-
-
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
structure and organization of metal clusters
additional information
-
structure and organization of metal clusters
additional information
-
structure and organization of metal clusters
additional information
structure catalytic role, and mechanism of the P-cluster, part of the MoFe protein, which has a role in immediate electron acceptance from the Fe protein
additional information
-
structures of the metal centers in Fe protein and MoFe protein, overview
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
Chromatium sp.
-
-
additional information
Chromatium sp.
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
structure and organization of metal clusters
additional information
-
contains also an inactive MoFe protein species
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
-
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
-
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
the iron-only nitrogenase form contains no molybdenum, vanadium or any other heterometal atom
additional information
-
redox properties of metal clusters
additional information
-
rhenium cannot substitute for molybdenum in vitro, nor in vivo
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]
additional information
-
other metal ions, e.g. Cu2+, Mg2+, Zn2+, Ca2+, at levels of 1-2 atoms per mol detected in the MoFe protein, no evidence for specific requirement, except for Mg2+ in MgATP complex, of any of these metals
additional information
-
metal-sulfur cluster, e.g. [4Fe-4S]