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Literature summary for 1.1.1.53 extracted from

  • Kazeto, Y.; Adachi, S.; Yamauchi, K.
    20beta-hydroxysteroid dehydrogenase of the japanes eel ovary: its cellular localization and changes in the enzymatic acitvity during sexual maturation (2001), Gen. Comp. Endocrinol., 122, 109-115.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
salmon gonadotropin stimulates the membrane bound part of the enzyme Anguilla japonica

General Stability

General Stability Organism
presence of octyl glucoside, 40.5% of enzyme activity from sonicated mitochondria retained, 20% glycerol Anguilla japonica
several detergents tested for solubilization Anguilla japonica

Localization

Localization Comment Organism GeneOntology No. Textmining
microsome
-
Anguilla japonica
-
-
mitochondrial membrane
-
Anguilla japonica 31966
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
17alpha-hydroxyprogesterone + NADPH + H+ Anguilla japonica
-
17alpha,20beta-dihydroxy-4-pregnene-3-one + NADP+ maturation-inducing hormone of oocytes ?

Organic Solvent Stability

Organic Solvent Comment Organism
deoxycholate 40.1% of enzyme activity from sonicated mitochondria retained, 20% glycerol Anguilla japonica

Organism

Organism UniProt Comment Textmining
Anguilla japonica
-
japanese eel
-

Source Tissue

Source Tissue Comment Organism Textmining
ovary
-
Anguilla japonica
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
specific activity about 3.8 pmol/min/mg in ovulated oocyte microsomes and 6.9 pmol/min/mg in ovulated oocyte mitochondria, 11.2 pmol/min/mg in ovarian tissue mitochondria after ovulation Anguilla japonica

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
17alpha-hydroxyprogesterone + NADPH + H+
-
Anguilla japonica 17alpha,20beta-dihydroxy-pregn-4-ene-3-one + NADP+
-
?
17alpha-hydroxyprogesterone + NADPH + H+
-
Anguilla japonica 17alpha,20beta-dihydroxy-4-pregnene-3-one + NADP+ maturation-inducing hormone of oocytes ?