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1.2.4.4: 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring)

This is an abbreviated version!
For detailed information about 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring), go to the full flat file.

Word Map on EC 1.2.4.4

Reaction

3-methyl-2-oxobutanoate
+
[dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
=
[dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylpropanoyl)dihydrolipoyllysine
+
CO2
+ 2 H+

Synonyms

2-oxoisocaproate dehydrogenase, 2-oxoisovalerate dehydrogenase, 2-oxoisovalerate dehydrogenase (lipoate), 2-oxoisovalerate dehydrogenase subunit alpha, alpha-keto-beta-methylvalerate dehydrogenase, alpha-ketoacid dehydrogenase, alpha-ketoisocaproate dehydrogenase, alpha-ketoisocaproic dehydrogenase, alpha-ketoisocaproic-alpha-keto-beta-methylvaleric dehydrogenase, alpha-ketoisovalerate dehydrogenase, alpha-oxoisocaproate dehydrogenase, BCDH, BCKA dehydrogenase, BCKADC, BCKD, BCKDC, BCKDH, BCKDH E1-alpha, BCKDH E1-beta, BCKDHA, BCKDHB, BCKDHc, BCOA, BCOAD, BDKG, Bkd, bkdF, branched chain alpha-ketoacid dehydrogenase complex, branched chain keto acid dehydrogenase, branched-chain (-2-oxoacid BCD) dehydrogenase, branched-chain 2-keto acid dehydrogenase, branched-chain 2-oxo acid dehydrogenase, branched-chain alpha-keto acid decarboxylase/dehydrogenase, branched-chain alpha-keto acid dehydrogenase, branched-chain alpha-keto acid dehydrogenase complex, branched-chain alpha-keto acid dehydrogenase E1beta subunit, branched-chain alpha-ketoacid dehydrogenase, branched-chain alpha-ketoacid dehydrogenase complex, branched-chain alpha-ketoacid dehydrogenase enzyme complex, branched-chain alpha-ketoacid dehydrogenase multienzyme complex, branched-chain alpha-oxo acid dehydrogenase, branched-chain keto acid dehydrogenase, branched-chain keto acid dehydrogenase complex, branched-chain ketoacid dehydrogenase, branched-chain ketoacid dehydrogenase E1, dehydrogenase, 2-oxoisocaproate, dehydrogenase, 2-oxoisovalerate (lipoate), dehydrogenase, branched chain alpha-keto acid, DHalpha, dihydrolipoyl acyl-transferase, dihydrolipoyl transacylase, E1b, E1b component, E1b component of the 2-oxo acid dehydrogenase complex, E2, EC 1.2.4.3, More

ECTree

     1 Oxidoreductases
         1.2 Acting on the aldehyde or oxo group of donors
             1.2.4 With a disulfide as acceptor
                1.2.4.4 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring)

Molecular Weight

Molecular Weight on EC 1.2.4.4 - 3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring)

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MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
154000
-
E1, heart
160000
-
wild-type enzyme and mutant enzymes S293E, S293A, S303A and S293E/S303E, gel filtration
167000
-
E1 component, equilibrium sedimentation
172000
-
equilibrium sedimentation
190000
19850
-
4 * 19850, gel filtration
20000
-
4 * 20000, SDS-PAGE
35000
36000
-
alpha2,beta2, 2 * 41000 + 2 * 36000, heart enzyme, SDS-PAGE
37000
37500
-
alpha2,beta2, 2 * 45500 + 2 * 37500, wild-type enzyme, SDS-PAGE
38000
-
alphax,betax, x * 478000 + x * 38000, SDS-PAGE
38500
-
alphax,betax, x * 46500 + x * 38500, SDS-PAGE
41000
-
alpha2,beta2, 2 * 41000 + 2 * 36000, heart enzyme, SDS-PAGE
45500
-
alpha2,beta2, 2 * 45500 + 2 * 37500, wild-type enzyme, SDS-PAGE
46000
46270
-
unlipoylated enzyme, mass spectrometric analysis
46460
-
lipoylated enzyme, mass spectrometric analysis
46500
-
alphax,betax, x * 46500 + x * 38500, SDS-PAGE
47000
-
alpha2,beta2, 2 * 47000 + 2 * 37000, SDS-PAGE
478000
-
alphax,betax, x * 478000 + x * 38000, SDS-PAGE
79400
-
gel filtration
additional information