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Metabolism of ingested H2SeO4 and H2SeO3 into H2Se
Stable Identifier
R-HSA-2408550
Type
Pathway
Species
Homo sapiens
ReviewStatus
5/5
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Metabolism (Homo sapiens)
Metabolism of amino acids and derivatives (Homo sapiens)
Selenoamino acid metabolism (Homo sapiens)
Metabolism of ingested H2SeO4 and H2SeO3 into H2Se (Homo sapiens)
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Ingested selenic acid (H2SeO4) and selenite (SeO3(2-)) are reduced to hydrogen selenide (H2Se) through a combination of actions involving bifunctional 3'-phosphoadenosine 5'-phosphosulfate synthase 1 and 2 (PAPSS1/2), PAPSe reductase (PAPSeR), and thioredoxin reductase 1 (TXNRD1).
Literature References
PubMed ID
Title
Journal
Year
19406206
Metabolism of selenium compounds catalyzed by the mammalian selenoprotein thioredoxin reductase
Lu, J
,
Berndt, C
,
Holmgren, A
Biochim. Biophys. Acta
2009
Participants
Events
H2SeO4 is converted to APSe by PAPSS1,2
(Homo sapiens)
APSe is phosphorylated to PAPSe by PAPSS1,2
(Homo sapiens)
PAPSe is reduced to SeO3(2-) by PAPSe reductase
(Homo sapiens)
SeO3(2-) is reduced to H2Se by TXNRD1
(Homo sapiens)
SeO3(2-) combines with GSH to form GSSeSG and GSSG
(Homo sapiens)
GSSeSG is reduced to GSSeH and GSH by GSR
(Homo sapiens)
GSSeH condenses with GSH to form H2Se and GSSG
(Homo sapiens)
Participates
as an event of
Selenoamino acid metabolism (Homo sapiens)
Event Information
Go Biological Process
selenium compound metabolic process (0001887)
Authored
Williams, MG (2014-05-06)
Reviewed
Rush, MG (2015-08-30)
Created
Williams, MG (2012-07-17)
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