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Literature summary extracted from

  • Qiu, J.; Wilson, H.; Rajagopalan, K.
    Structure-based alteration of substrate specificity and catalytic activity of sulfite oxidase from sulfite oxidation to nitrate reduction (2012), Biochemistry, 51, 1134-1147.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

EC Number Cloned (Comment) Organism
1.8.3.1
-
Homo sapiens
1.8.3.1
-
Gallus gallus

Protein Variants

EC Number Protein Variants Comment Organism
1.8.3.1 R472M introduction of predicted catalytic site residues of assimilatory nitrate reductase, kinetic analysis Homo sapiens
1.8.3.1 R472Q introduction of predicted catalytic site residues of assimilatory nitrate reductase, kinetic analysis Homo sapiens
1.8.3.1 V474M active site mutant, kinetic analysis Homo sapiens
1.8.3.1 Y322F/R450M introduction of predicted catalytic site residues of assimilatory nitrate reductase, markedly decreased ability to bind sulfite at pH 8.5 Gallus gallus
1.8.3.1 Y343F/R472Q active site mutant, kinetic analysis Homo sapiens
1.8.3.1 Y343N active site mutant, kinetic analysis Homo sapiens
1.8.3.1 Y343N/R472M active site mutant, kinetic analysis Homo sapiens
1.8.3.1 Y343N/R472M/V474M active site mutant, kinetic analysis Homo sapiens

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.8.3.1 0.00046
-
sulfite mutant V474M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.0013
-
sulfite wild-type, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.00133
-
sulfite wild-type, 25°C, pH 7.0 Gallus gallus
1.8.3.1 0.00134
-
sulfite mutant V474M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.0019
-
sulfite mutant R472M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.0023
-
sulfite mutant R472Q, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.0025
-
sulfite mutant R472M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.0027
-
sulfite wild-type, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.0032
-
sulfite mutant V474M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.0035
-
sulfite mutant R472Q, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.0043
-
sulfite wild-type, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.0047
-
sulfite mutant R472M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.008
-
sulfite wild-type, 25°C, pH 8.5 Gallus gallus
1.8.3.1 0.0083
-
sulfite wild-type, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.013
-
sulfite mutant R472Q, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.0144
-
sulfite mutant V474M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.016
-
sulfite mutant R472Q, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.021
-
sulfite mutant R472M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.022
-
sulfite wild-type, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.0319
-
sulfite mutant V474M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.0354
-
sulfite mutant V474M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.04
-
sulfite mutant V474M, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.045
-
sulfite mutant R472Q, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.0529
-
sulfite wild-type, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.0537
-
sulfite mutant R472M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.0614
-
sulfite mutant Y343F/R472Q, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.067
-
sulfite wild-type, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.0877
-
sulfite mutant Y343F/R472Q, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.094
-
sulfite mutant R472M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.0947
-
sulfite mutant Y343N, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.0953
-
sulfite mutant Y343N, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.0967
-
sulfite mutant R472Q, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.0969
-
sulfite mutant R472M, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.181
-
sulfite mutant R472Q, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.2827
-
sulfite mutant Y343F/R472Q, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.297
-
sulfite mutant Y343N, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.712
-
sulfite mutant Y343F/R472Q, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.85
-
sulfite mutant Y343N, 25°C, pH 8.5 Homo sapiens
1.8.3.1 1.1
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 1.42
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 2.14
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 2.46
-
sulfite mutant Y343N, 25°C, pH 9.0 Homo sapiens
1.8.3.1 3.34
-
sulfite mutant Y343F/R472Q, 25°C, pH 9.0 Homo sapiens
1.8.3.1 4.64
-
sulfite mutant Y343N/R472M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 8.6
-
sulfite mutant Y322N/R450M, 25°C, pH 7.0 Gallus gallus
1.8.3.1 9.37
-
sulfite mutant Y343N, 25°C, pH 9.5 Homo sapiens
1.8.3.1 11.73
-
sulfite mutant Y322N/R450M, 25°C, pH 8.5 Gallus gallus
1.8.3.1 12
-
sulfite mutant Y343N, 25°C, pH 10.0 Homo sapiens
1.8.3.1 14
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 16.8
-
sulfite mutant Y343N/R472M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 19.28
-
sulfite mutant Y343N/R472M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 39.9
-
sulfite mutant Y343F/R472Q, 25°C, pH 9.5 Homo sapiens
1.8.3.1 42.99
-
sulfite mutant Y343N/R472M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 55.5
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 59.6
-
sulfite mutant Y343F/R472Q, 25°C, pH 10.0 Homo sapiens
1.8.3.1 85.64
-
sulfite mutant Y343N/R472M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 111
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 208
-
sulfite mutant Y343N/R472m, 25°C, pH 9.5 Homo sapiens
1.8.3.1 418
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 10.0 Homo sapiens

Organism

EC Number Organism UniProt Comment Textmining
1.8.3.1 Gallus gallus P07850
-
-
1.8.3.1 Homo sapiens
-
-
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.8.3.1 sulfite + cytochrome c
-
Homo sapiens sulfate + reduced cytochrome c
-
?
1.8.3.1 sulfite + cytochrome c
-
Gallus gallus sulfate + reduced cytochrome c
-
?
1.8.3.1 sulfite + ferricyanide + H2O
-
Homo sapiens sulfate + ferrocyanide
-
?
1.8.3.1 sulfite + ferricyanide + H2O
-
Gallus gallus sulfate + ferrocyanide
-
?

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
1.8.3.1 0.46
-
sulfite mutant R472M, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.52
-
sulfite mutant R472Q, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.97
-
sulfite mutant Y343N/R472Q, 25°C, pH 9.5 Homo sapiens
1.8.3.1 1.13
-
sulfite mutant Y343N/R472Q, 25°C, pH 7.0 Homo sapiens
1.8.3.1 1.13
-
sulfite mutant Y343N/R472Q, 25°C, pH 9.0 Homo sapiens
1.8.3.1 1.33
-
sulfite mutant Y343N/R472Q, 25°C, pH 8.0 Homo sapiens
1.8.3.1 1.35
-
sulfite mutant Y343N/R472Q, 25°C, pH 6.0 Homo sapiens
1.8.3.1 1.42
-
sulfite mutant Y343N/R472Q, 25°C, pH 8.5 Homo sapiens
1.8.3.1 1.44
-
sulfite mutant Y343F/R472Q, 25°C, pH 6.0 Homo sapiens
1.8.3.1 1.7
-
sulfite mutant R472Q, 25°C, pH 9.5 Homo sapiens
1.8.3.1 1.73
-
sulfite mutant Y343F/R472Q, 25°C, pH 7.0 Homo sapiens
1.8.3.1 1.8
-
sulfite mutant R472M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 1.9
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 2.05
-
sulfite mutant Y343F/R472Q, 25°C, pH 8.0 Homo sapiens
1.8.3.1 2.25
-
sulfite mutant Y343F/R472Q, 25°C, pH 8.5 Homo sapiens
1.8.3.1 2.3
-
sulfite mutant Y343F/R472Q, 25°C, pH 9.0 Homo sapiens
1.8.3.1 2.52
-
sulfite mutant Y322N/R450M, 25°C, pH 8.5 Gallus gallus
1.8.3.1 2.8
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 10.0 Homo sapiens
1.8.3.1 2.96
-
sulfite mutant Y343F/R472Q, 25°C, pH 10.0 Homo sapiens
1.8.3.1 3.17
-
sulfite mutant Y343N, 25°C, pH 6.0 Homo sapiens
1.8.3.1 3.4
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 3.45
-
sulfite mutant R472M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 3.5
-
sulfite mutant R472M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 3.58
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 3.6
-
sulfite mutant R472M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 3.8
-
sulfite mutant R472M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 3.9
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 4.24
-
sulfite mutant R472Q, 25°C, pH 9.0 Homo sapiens
1.8.3.1 4.38
-
sulfite mutant Y343N, 25°C, pH 10.0 Homo sapiens
1.8.3.1 4.6
-
sulfite mutant R472Q, 25°C, pH 8.5 Homo sapiens
1.8.3.1 4.83
-
sulfite mutant Y322N/R450M, 25°C, pH 7.0 Gallus gallus
1.8.3.1 4.9
-
sulfite mutant Y343F/R472Q, 25°C, pH 9.5 Homo sapiens
1.8.3.1 5
-
sulfite mutant R472M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 5.23
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 5.6
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 5.8
-
sulfite mutant R472Q, 25°C, pH 7.0 Homo sapiens
1.8.3.1 5.96
-
sulfite mutant V474M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 8.1
-
sulfite mutant Y343N, 25°C, pH 9.5 Homo sapiens
1.8.3.1 8.2
-
sulfite mutant R472Q, 25°C, pH 6.0 Homo sapiens
1.8.3.1 9.3
-
sulfite mutant R472Q, 25°C, pH 8.0 Homo sapiens
1.8.3.1 11.4
-
sulfite mutant V474M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 12.4
-
sulfite mutant V474M, 25°C, pH 10.0 Homo sapiens
1.8.3.1 12.8
-
sulfite mutant Y343N, 25°C, pH 7.0 Homo sapiens
1.8.3.1 13
-
sulfite wild-type, 25°C, pH 10.0 Homo sapiens
1.8.3.1 13.2
-
sulfite wild-type, 25°C, pH 6.0 Homo sapiens
1.8.3.1 13.75
-
sulfite mutant Y343N, 25°C, pH 8.0 Homo sapiens
1.8.3.1 15.5
-
sulfite mutant Y343N, 25°C, pH 9.0 Homo sapiens
1.8.3.1 15.8
-
sulfite mutant V474M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 16.9
-
sulfite mutant Y343N, 25°C, pH 8.5 Homo sapiens
1.8.3.1 17.1
-
sulfite mutant V474M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 17.8
-
sulfite mutant V474M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 19.6
-
sulfite mutant V474M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 24.2
-
sulfite wild-type, 25°C, pH 7.0 Homo sapiens
1.8.3.1 25.7
-
sulfite wild-type, 25°C, pH 9.0 Homo sapiens
1.8.3.1 25.9
-
sulfite wild-type, 25°C, pH 8.0 Homo sapiens
1.8.3.1 26.3
-
sulfite wild-type, 25°C, pH 9.5 Homo sapiens
1.8.3.1 26.9
-
sulfite wild-type, 25°C, pH 8.5 Homo sapiens
1.8.3.1 36.1
-
sulfite wild-type, 25°C, pH 7.0 Gallus gallus
1.8.3.1 73
-
sulfite wild-type, 25°C, pH 8.5 Gallus gallus

kcat/KM [mM/s]

EC Number kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
1.8.3.1 0.00047
-
sulfite mutant Y343N/R472M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.00067
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.0013
-
sulfite mutant Y343N/R472M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.0033
-
sulfite mutant Y343N/R472m, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.0047
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.0049
-
sulfite mutant Y343F/R472Q, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.0069
-
sulfite mutant Y343N/R472m, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.008
-
sulfite mutant Y343N/R472M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.01
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.0124
-
sulfite mutant Y343F/R472Q, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.0244
-
sulfite mutant Y343N/R472M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.0279
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.036
-
sulfite mutant Y343N, 25°C, pH 10.0 Homo sapiens
1.8.3.1 0.069
-
sulfite mutant Y343F/R472Q, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.0866
-
sulfite mutant Y343N, 25°C, pH 9.5 Homo sapiens
1.8.3.1 0.167
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 0.173
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 0.214
-
sulfite mutant Y322N/R450M, 25°C, pH 8.5 Gallus gallus
1.8.3.1 0.237
-
sulfite mutant Y343N/R472M/V474M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 0.316
-
sulfite mutant Y343F/R472Q, 25°C, pH 8.5 Homo sapiens
1.8.3.1 0.632
-
sulfite mutant Y343N, 25°C, pH 9.0 Homo sapiens
1.8.3.1 0.725
-
sulfite mutant Y343F/R472Q, 25°C, pH 8.0 Homo sapiens
1.8.3.1 1.97
-
sulfite mutant Y343F/R472Q, 25°C, pH 7.0 Homo sapiens
1.8.3.1 1.99
-
sulfite mutant Y343N, 25°C, pH 8.5 Homo sapiens
1.8.3.1 2.35
-
sulfite mutant Y343F/R472Q, 25°C, pH 6.0 Homo sapiens
1.8.3.1 3.33
-
sulfite mutant Y343N, 25°C, pH 6.0 Homo sapiens
1.8.3.1 4.63
-
sulfite mutant Y343N, 25°C, pH 8.0 Homo sapiens
1.8.3.1 8.6
-
sulfite wild-type, 25°C, pH 7.0 Gallus gallus
1.8.3.1 13.5
-
sulfite mutant Y343N, 25°C, pH 7.0 Homo sapiens
1.8.3.1 30.8
-
sulfite mutant V474M, 25°C, pH 10.0 Homo sapiens
1.8.3.1 53.6
-
sulfite mutant V474M, 25°C, pH 9.5 Homo sapiens
1.8.3.1 136
-
sulfite mutant V474M, 25°C, pH 9.0 Homo sapiens
1.8.3.1 246
-
sulfite wild-type, 25°C, pH 10.0 Homo sapiens
1.8.3.1 392
-
sulfite wild-type, 25°C, pH 9.5 Homo sapiens
1.8.3.1 446
-
sulfite mutant V474M, 25°C, pH 8.5 Homo sapiens
1.8.3.1 558
-
sulfite mutant V474M, 25°C, pH 8.0 Homo sapiens
1.8.3.1 851
-
sulfite mutant V474M, 25°C, pH 7.0 Homo sapiens
1.8.3.1 1160
-
sulfite wild-type, 25°C, pH 9.0 Homo sapiens
1.8.3.1 1300
-
sulfite mutant V474M, 25°C, pH 6.0 Homo sapiens
1.8.3.1 3260
-
sulfite wild-type, 25°C, pH 8.5 Homo sapiens
1.8.3.1 5950
-
sulfite wild-type, 25°C, pH 8.0 Homo sapiens
1.8.3.1 8690
-
sulfite wild-type, 25°C, pH 8.5 Gallus gallus
1.8.3.1 8900
-
sulfite wild-type, 25°C, pH 7.0 Homo sapiens
1.8.3.1 10000
-
sulfite wild-type, 25°C, pH 6.0 Homo sapiens
1.8.3.1 27000
-
sulfite mutant Y322N/R450M, 25°C, pH 7.0 Gallus gallus