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Literature summary for 1.6.2.2 extracted from

  • Kitajima, S.; Minakami, S.
    Human NADH-cytochrome b5 reductases: comparison among those of erythrocyte membrane, erythrocyte cytosol, and liver microsomes (1983), J. Biochem., 93, 615-620.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0006 0.0007 NADH enzyme from erythrocyte and liver Homo sapiens
0.02
-
ferricytochrome b5 enzyme from eythrocyte membrane Homo sapiens
0.035
-
ferricytochrome b5 enzyme from liver microsome membrane, solubilized with Triton X-100 Homo sapiens
0.04
-
ferricytochrome b5 enzyme from eythrocyte cytosol Homo sapiens
0.045
-
ferricytochrome b5 enzyme from liver microsome membrane, cathepsin D solubilized Homo sapiens

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol may be a proteolytic product of the membrane enzyme Homo sapiens 5829
-
endoplasmic reticulum
-
Homo sapiens 5783
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
32000
-
x * 32000, enzyme from erythrocyte cytosol and liver microsomal enzyme solubilized with cathepsin D, SDS-PAGE Homo sapiens
32000
-
x * 32000, enzyme from liver microsomes solubilized with Triton X-100, SDS-PAGE Homo sapiens
36000
-
x * 36000, enzyme from erythrocyte membrane, SDS-PAGE Homo sapiens

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
erythrocyte soluble form Homo sapiens
-
liver
-
Homo sapiens
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2 ferricyanide + NADH
-
Homo sapiens 2 ferrocyanide + NAD+ + H+
-
?
NADH + ferricytochrome b5
-
Homo sapiens NAD+ + H+ + ferrocytochrome b5
-
r

Subunits

Subunits Comment Organism
? x * 32000, enzyme from erythrocyte cytosol and liver microsomal enzyme solubilized with cathepsin D, SDS-PAGE Homo sapiens
? x * 36000, enzyme from erythrocyte membrane, SDS-PAGE Homo sapiens
? x * 32000, enzyme from liver microsomes solubilized with Triton X-100, SDS-PAGE Homo sapiens

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
98.3
-
ferricyanide enzyme from liver microsomes, protease solubilized Homo sapiens
677
-
ferricyanide enzyme from erythrocyte membrane Homo sapiens
700
-
ferricyanide enzyme from erythrocyte cytosol Homo sapiens
827
-
ferricyanide enzyme from liver microsomes, detergent solubilized Homo sapiens

Cofactor

Cofactor Comment Organism Structure
NADH
-
Homo sapiens