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Literature summary for 1.7.1.2 extracted from

  • Hipkin, C.R.; Al-Bassam, B.A.; Syrett, P.J.
    Pyridine nucleotide specificity and other properties of purified nitrate reductase from Chlorella variegata (1979), Planta, 144, 137-141.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
cyanide
-
Chlorella variegata
NAD(P)H
-
Chlorella variegata
p-chloromercuribenzoate inhibition of diaphorase activity; NADH or NADPH protect Chlorella variegata

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0115
-
NADH
-
Chlorella variegata
0.0145
-
NADPH
-
Chlorella variegata
0.13
-
nitrate cofactor NADH Chlorella variegata
0.14
-
nitrate cosubstrate NADPH Chlorella variegata

Organism

Organism UniProt Comment Textmining
Chlorella variegata
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Chlorella variegata

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.718
-
NADH-nitrate reductase Chlorella variegata
0.766
-
NADPH-nitrate reductase Chlorella variegata

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
NAD(P)H + nitrate
-
Chlorella variegata NAD(P)+ + nitrite + H2O
-
?
nitrate + NADH + H+
-
Chlorella variegata nitrite + NAD+ + H2O
-
r

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.4 7.7
-
Chlorella variegata

pH Range

pH Minimum pH Maximum Comment Organism
7.1 8.2 at pH 7.1 and 8.2: about 50% of activity maximum Chlorella variegata

Cofactor

Cofactor Comment Organism Structure
NADH
-
Chlorella variegata
NADPH
-
Chlorella variegata