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Literature summary for 1.8.3.1 extracted from

  • Haensch, R.; Lang, C.; Rennenberg, H.; Mendel, R.R.
    Significance of plant sulfite oxidase (2007), Plant Biol., 9, 589-595.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
additional information 2fold increase in SO activity in fumigated leaf material as compared to non-fumigated plants Cytisus scoparius
additional information 4fold increase in sulfite oxidase activity in fumigated leaf material as compared to non-fumigated plants Quercus ilex
additional information no variation in SO activity between fumigated and non-fumigated plants Phragmites australis
additional information no variation in SO activity between fumigated and non-fumigated plants Hedera helix

Application

Application Comment Organism
medicine deficiency in SO, due to either a defect in molybdopterin cofactor biosynthesis or a mutation in the apo-enzyme gene itself, leads to dramatic neurological problems that can cause death in early infancy Homo sapiens
additional information SO may play a role in protecting catalase from sulfite damage. SO may possibly serve as a safety valve to detoxify excess amounts of sulfite and protect the cell from sulfitolysis Arabidopsis thaliana
additional information SO may possibly serve as a safety valve to detoxify excess amounts of sulfite and protect the cell from sulfitolysis Cytisus scoparius
additional information sulfite oxidase may possibly serve as a safety valve to detoxify excess amounts of sulfite and protect the cell from sulfitolysis Quercus ilex

Cloned(Commentary)

Cloned (Comment) Organism
overexpressed in transgenic poplar plants with SO2 gas Arabidopsis thaliana

Protein Variants

Protein Variants Comment Organism
additional information in tobacco mutants lacking the molybdenum cofactor and, therefore, also lacking active peroxisomal sulfite oxidase, the total sulfite oxidizing capacity of cell extracts decreased to 40% of the wild-type Nicotiana plumbaginifolia

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0226
-
sulfite
-
Arabidopsis thaliana

Localization

Localization Comment Organism GeneOntology No. Textmining
mitochondrion
-
Rattus norvegicus 5739
-
peroxisome
-
Arabidopsis thaliana 5777
-
peroxisome
-
Nicotiana plumbaginifolia 5777
-

Metals/Ions

Metals/Ions Comment Organism Structure
Molybdenum
-
Gallus gallus
Molybdenum
-
Arabidopsis thaliana

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
43300
-
sequence analysis Arabidopsis thaliana

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
ecotype Columbia
-
Cytisus scoparius
-
-
-
Gallus gallus
-
-
-
Hedera helix
-
-
-
Homo sapiens
-
-
-
Nicotiana plumbaginifolia
-
-
-
Phragmites australis
-
-
-
Populus tremula x Populus alba
-
-
-
Quercus ilex
-
-
-
Rattus norvegicus
-
-
-
Spinacia oleracea
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Populus tremula x Populus alba
-
leaf SO shows constitutive expression without any pronounced diurnal rhythm. No difference at the protein level in younger or older rosette or stem leaves Arabidopsis thaliana
-
liver
-
Rattus norvegicus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sulfite + cytochrome c
-
Rattus norvegicus sulfate + reduced cytochrome c
-
?
sulfite + ferricyanide + H2O
-
Arabidopsis thaliana sulfate + ferrocyanide
-
?
sulfite + O2 + H2O
-
Arabidopsis thaliana sulfate + H2O2
-
?