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Literature summary for 1.8.7.1 extracted from

  • McManus, M.T.; Joshi, S.; Searle, B.; Pither-Joyce, M.; Shaw, M.; Leung, S.; Albert, N.; Shigyo, M.; Jakse, J.; Havey, M.J.; McCallum, J.
    Genotypic variation in sulfur assimilation and metabolism of onion (Allium cepa L.) III. Characterization of sulfite reductase (2012), Phytochemistry, 83, 34-42.
    View publication on PubMed
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Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli Allium cepa

Localization

Localization Comment Organism GeneOntology No. Textmining
chloroplast
-
 Allium cepa 9507
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
71000
-
 x * 71000, SDS-PAGE Allium cepa
71950
-
 x * 71950, calculated from amino acid sequence Allium cepa

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
sulfite + reduced ferredoxin + H+ Allium cepa
-
 hydrogen sulfide + oxidized ferredoxin + H2O
-
 ?

Organism

Organism UniProt Comment Textmining
Allium cepa Q8VWI4 cultivars Kojak, Encore, W202A, and Texas Grano
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Allium cepa
-
root
-
 Allium cepa
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sulfite + reduced ferredoxin + H+
-
 Allium cepa hydrogen sulfide + oxidized ferredoxin + H2O
-
 ?

Subunits

Subunits Comment Organism
? x * 71000, SDS-PAGE Allium cepa
? x * 71950, calculated from amino acid sequence Allium cepa

Synonyms

Synonyms Comment Organism
ferredoxin-sulfite reductase
-
 Allium cepa
SIR
-
 Allium cepa

Expression

Organism Comment Expression
Allium cepa a significant increase in activity is observed in the leaves of the pungent cultivar Kojak in response to added sulfur but not in the less pungent cultivar Encore. In hydroponically-grown plants, levels of enzyme transcripts are significantly higher in the roots of sulfur-sufficient when compared with sulfur-deficient plants of the pungent cultivar W202A but not the less pungent cultivar Texas Grano 438. A higher level of enzyme activity is also observed in the sulfur-sufficient treatment in leaves of both cultivars before and after bulbing up