1.12.98.2: 5,10-methenyltetrahydromethanopterin hydrogenase

This is an abbreviated version!
For detailed information about 5,10-methenyltetrahydromethanopterin hydrogenase, go to the full flat file.

Reaction

Synonyms

5,10-methylene-H4MPT dehydrogenase, Dehydrogenase, methylenetetrahydromethanopterin, EC 1.12.99.4, H2-forming methylenetetrahydromethanopterin dehydrogenase, H2-forming N5,N10-Methenyltetrahydromethanopterin dehydrogenase, Hmd, methylenetetrahydromethanopterin dehydrogenase, N5,N10-methenyltetrahydromethanopterin hydrogenase, N5,N10-Methylenetetrahydromethanopterin dehydrogenase, N5,N10-methylenetetrahydromethanopterin dehydrogenase (H2-forming)

ECTree

     1 Oxidoreductases

         1.12 Acting on hydrogen as donor

             1.12.98 With other, known, physiological acceptors

                1.12.98.2 5,10-methenyltetrahydromethanopterin hydrogenase

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Results	in table
148	AA Sequence
1	CAS Registry Number
3	Cloned(Commentary)
6	Cofactor
2	Crystallization (Commentary)
5	General Stability
7	Inhibitors
4	Ki Value [mM]
14	KM Value [mM]
20	Metals/Ions
16	Molecular Weight [Da]
8	Natural Substrates/ Products (Substrates)
143	Organism
5	Oxidation Stability
7	Pathway
19	PDB ID
4	pH Optimum
1	pH Range
1	pI Value
7	Purification (Commentary)
4	Reaction
4	Reaction Type
27	Reference
6	Specific Activity [micromol/min/mg]
2	Storage Stability
39	Substrates and Products (Substrate)
15	Subunits
13	Synonyms
1	Systematic Name
5	Temperature Optimum [°C]
1	Temperature Range [°C]
3	Temperature Stability [°C]
2	Turnover Number [1/s]

Oxidation Stability

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Oxidation Stability on EC 1.12.98.2 - 5,10-methenyltetrahydromethanopterin hydrogenase

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OXIDATION STABILITY

ORGANISM

UNIPROT

LITERATURE

enzyme is rapidly inactivated upon exposure to oxygen

Methanothermobacter marburgensis

-

658635

purified enzyme is very labile even under strictly anoxic conditions

Methanothermococcus thermolithotrophicus

-

394696

rapidly inactivated in the presence of molecular oxygen. The rate of inactivation increases in the presence of dithiothreitol (2 mM) or of mercaptoethanol (5 mM)

Methanothermobacter marburgensis

P32440

727402

stable to O2

Methanothermobacter thermautotrophicus

-

394691

the enzyme is much more sensitive towards inactivation by O2 than the enzyme from Methanothermobacter marburgensis

Methanothermobacter wolfeii

P32441

727402