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Literature summary for 1.2.4.4 extracted from

  • Randle, P.J.; Patston, P.A.; Espinal, J.
    Branched-chain ketoacid dehydrogenase (1987), The Enzymes, 3rd Ed. (Boyer, P. D. , ed. ), 18, 97-121.
No PubMed abstract available
Search for more literature for 1.2.4.4

Activating Compound

Activating Compound Comment Organism Structure
Activator protein a protein in rat liver and kidney mitochondria that reactivates phosphorylated branched-chain complex without dephosphorylation Rattus norvegicus
Lipoamide the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Rattus norvegicus
Lipoamide the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Bos taurus
Lipoamide the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Oryctolagus cuniculus
thiamine diphosphate the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Rattus norvegicus
thiamine diphosphate the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Bos taurus
thiamine diphosphate the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Oryctolagus cuniculus

Inhibitors

Inhibitors Comment Organism Structure
3-methylbutanoyl-CoA
-
 Bos taurus
NADH 0.1 mM, 44% inhibition Bos taurus
NADH
-
 Rattus norvegicus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
 additional information
-
 Rattus norvegicus
additional information
-
 additional information
-
 Bos taurus
additional information
-
 additional information
-
 Oryctolagus cuniculus

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Rattus norvegicus
Mg2+ required Bos taurus
Mg2+ required Oryctolagus cuniculus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
additional information
-
-
 Rattus norvegicus
additional information
-
 the MW of the holocomplex of rabbit liver is higher than 2000000 Da Oryctolagus cuniculus
additional information
-
 MW of the holocomplex from ox liver is 275000 Da Bos taurus
35000
-
 alpha2,beta2, 2 * 46000 + 2 * 35000, enzyme from liver, SDS-PAGE Bos taurus
35000
-
 alpha2,beta2, 2 * 46000 + 2 * 35000, enzyme from kidney, SDS-PAGE Bos taurus
37000
-
 alpha2,beta2, 2 * 46000 + 2 * 37000, SDS-PAGE Rattus norvegicus
37000
-
 alpha2,beta2, 2 * 47000 + 2 * 37000, SDS-PAGE Oryctolagus cuniculus
46000
-
 alpha2,beta2, 2 * 46000 + 2 * 35000, enzyme from liver, SDS-PAGE Bos taurus
46000
-
 alpha2,beta2, 2 * 46000 + 2 * 35000, enzyme from kidney, SDS-PAGE Bos taurus
46000
-
 alpha2,beta2, 2 * 46000 + 2 * 37000, SDS-PAGE Rattus norvegicus
47000
-
 alpha2,beta2, 2 * 47000 + 2 * 37000, SDS-PAGE Oryctolagus cuniculus
190000
-
 E1 component, gel filtration Rattus norvegicus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
additional information Rattus norvegicus
-
 ?
-
 ?
additional information Oryctolagus cuniculus
-
 ?
-
 ?
additional information Bos taurus the enzyme complex is regulated by reversible phosphorylation, complex is inactive in the phosphorylated form and active in the dephosphorylated form ?
-
 ?

Organism

Organism UniProt Comment Textmining
Bos taurus
-
-
-
Oryctolagus cuniculus
-
-
-
Rattus norvegicus
-
-
-

Reaction

Reaction Comment Organism Reaction ID
3-methyl-2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine = [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylpropanoyl)dihydrolipoyllysine + CO2 + 2 H+ the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH, the multienzyme complex also contains small amounts of a specific kinase and a specific phosphatase which modulate the activity of E1 by phosphorylation and dephosphorylation Rattus norvegicus
a
3-methyl-2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine = [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylpropanoyl)dihydrolipoyllysine + CO2 + 2 H+ the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH, the multienzyme complex also contains small amounts of a specific kinase and a specific phosphatase which modulate the activity of E1 by phosphorylation and dephosphorylation Bos taurus
a
3-methyl-2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine = [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylpropanoyl)dihydrolipoyllysine + CO2 + 2 H+ the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH, the multienzyme complex also contains small amounts of a specific kinase and a specific phosphatase which modulate the activity of E1 by phosphorylation and dephosphorylation Oryctolagus cuniculus
a

Source Tissue

Source Tissue Comment Organism Textmining
kidney
-
 Rattus norvegicus
-
kidney
-
 Bos taurus
-
liver
-
 Rattus norvegicus
-
liver
-
 Bos taurus
-
liver
-
 Oryctolagus cuniculus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Rattus norvegicus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(propanoyl)dihydrolipoyllysine + CO2
-
 ?
2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Bos taurus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(propanoyl)dihydrolipoyllysine + CO2
-
 ?
2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Oryctolagus cuniculus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(propanoyl)dihydrolipoyllysine + CO2
-
 ?
3-methyl-2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Rattus norvegicus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylpropanoyl)dihydrolipoyllysine + CO2
-
 ?
3-methyl-2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Bos taurus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylpropanoyl)dihydrolipoyllysine + CO2
-
 ?
3-methyl-2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Oryctolagus cuniculus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylpropanoyl)dihydrolipoyllysine + CO2
-
 ?
3-methyl-2-oxopentanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Rattus norvegicus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylbutanoyl)dihydrolipoyllysine + CO2
-
 ?
3-methyl-2-oxopentanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Bos taurus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylbutanoyl)dihydrolipoyllysine + CO2
-
 ?
3-methyl-2-oxopentanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] lipoyllysine
-
 Oryctolagus cuniculus [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] S-(2-methylbutanoyl)dihydrolipoyllysine + CO2
-
 ?
4-methyl-2-oxopentanoate + NAD+ + CoA
-
 Rattus norvegicus 3-methylbutanoyl-CoA + CO2 + NADH
-
 ?
4-methyl-2-oxopentanoate + NAD+ + CoA
-
 Bos taurus 3-methylbutanoyl-CoA + CO2 + NADH
-
 ?
4-methyl-2-oxopentanoate + NAD+ + CoA
-
 Oryctolagus cuniculus 3-methylbutanoyl-CoA + CO2 + NADH
-
 ?
additional information
-
 Rattus norvegicus ?
-
 ?
additional information
-
 Oryctolagus cuniculus ?
-
 ?
additional information enzyme probably is identical with EC 1.2.1.25 Rattus norvegicus ?
-
 ?
additional information enzyme probably is identical with EC 1.2.1.25 Bos taurus ?
-
 ?
additional information enzyme probably is identical with EC 1.2.1.25 Oryctolagus cuniculus ?
-
 ?
additional information the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1(thiamine diphosphate)-C(OH)CHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Rattus norvegicus ?
-
 ?
additional information the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1(thiamine diphosphate)-C(OH)CHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Bos taurus ?
-
 ?
additional information the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1(thiamine diphosphate)-C(OH)CHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Oryctolagus cuniculus ?
-
 ?
additional information the enzyme complex is regulated by reversible phosphorylation, complex is inactive in the phosphorylated form and active in the dephosphorylated form Bos taurus ?
-
 ?
pyruvate + NAD+ + CoA
-
 Rattus norvegicus acetyl-CoA + CO2 + NADH
-
 ?
pyruvate + NAD+ + CoA
-
 Bos taurus acetyl-CoA + CO2 + NADH
-
 ?
pyruvate + NAD+ + CoA
-
 Oryctolagus cuniculus acetyl-CoA + CO2 + NADH
-
 ?

Subunits

Subunits Comment Organism
More lipoamide dehydrogenase component of the holoenzyme complex is a dimer, the E2 component is composed of 24 subunits Bos taurus
tetramer alpha2,beta2, 2 * 46000 + 2 * 35000, enzyme from liver, SDS-PAGE Bos taurus
tetramer alpha2,beta2, 2 * 46000 + 2 * 35000, enzyme from kidney, SDS-PAGE Bos taurus
tetramer alpha2,beta2, 2 * 46000 + 2 * 37000, SDS-PAGE Rattus norvegicus
tetramer alpha2,beta2, 2 * 47000 + 2 * 37000, SDS-PAGE Oryctolagus cuniculus

Cofactor

Cofactor Comment Organism Structure
CoA the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Rattus norvegicus
CoA the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Bos taurus
CoA the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Oryctolagus cuniculus
NAD+ the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Rattus norvegicus
NAD+ the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Bos taurus
NAD+ the multienzyme complex catalyzes a thiamine diphosphate- and Mg2+-dependent oxidative decarboxylation of branched-chain keto acids with the formation of branched-chain acyl-CoA and reduction of NAD+ to NADH: R1R2CHCOCOOH + NAD+ + CoASH = R1R2CHCO-S-CoA + NADH + CO2, component E1 (EC 1.2.4.4, branched-chain keto acid dehydrogenase), component E2 (no EC number, branched-chain acyltransferase), component E3 (EC 1.8.1.4, dihydrolipoamide dehydrogenase), partial reactions catalyzed by the multienzyme complex: 1. R1R2CHCOCOOH + E1-(thiamine diphosphate) = E1-(thiamine diphosphate)-COHCHR1R2 + CO2, 2. E1-(thiamine diphosphate)-COHCHR1R2 + lipoyl-E2 = R1R2CHCO-SCoA + dihydrolipoyl-E2, 4. dihydrolipoyl-E2 + NAD+ = lipoyl-E2 + NADH Oryctolagus cuniculus

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
additional information
-
 additional information
-
 Rattus norvegicus
additional information
-
 additional information
-
 Bos taurus
additional information
-
 additional information
-
 Oryctolagus cuniculus