Date published: 2026-6-8

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SEPHS1 Activators

SEPHS1 activators are chemical compounds that directly or indirectly enhance the functional activity of SEPHS1, a critical enzyme involved in the biosynthesis of selenophosphate, which is the selenium donor in the production of selenoproteins. These activators are primarily selenium-containing compounds or selenium derivatives that can be metabolized into selenide within the body. Selenide is an essential cofactor for SEPHS1, and its presence enhances the enzyme's activity, aiding in the synthesis of selenophosphate. This process is vital for the production of selenoproteins, a group of proteins that contain the amino acid selenocysteine and play key roles in various biological processes, including redox homeostasis and the response to oxidative stress.

The compounds in the SEPHS1 Activators category include both organic and inorganic forms of selenium. Organic compounds like L-Selenomethionine, Selenocysteine, Seleno-DL-Methionine, Seleno-DL-Cystine, Seleno-L-Cystine, and Se-Methylselenocysteine, are primarily selenium-containing amino acids or their derivatives. Upon ingestion, these compounds are metabolized into selenide, which acts as a direct cofactor in the SEPHS1-mediated selenophosphate production. On the other hand, inorganic selenium compounds such as Sodium Selenite, Selenium Dioxide, Selenic Acid, and Selenous Acid are reduced into selenide within the body. The resultant selenide then enhances the function of SEPHS1 in the same manner.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

L-Selenomethionine

3211-76-5sc-204050
sc-204050A
250 mg
1 g
$223.00
$597.00
1
(1)

L-Selenomethionine is a naturally occurring amino acid that is a common form of dietary selenium. It is metabolized into selenide, which is an essential cofactor for SEPHS1 to synthesize selenophosphate for selenoprotein production.

Sodium selenite

10102-18-8sc-253595
sc-253595B
sc-253595C
sc-253595A
5 g
500 g
1 kg
100 g
$49.00
$183.00
$316.00
$98.00
3
(2)

Sodium Selenite is an inorganic form of selenium, and it can be metabolized into selenide. The selenide then acts as a cofactor for SEPHS1, enhancing its function in selenoprotein synthesis.

Selenium

7782-49-2sc-250973
50 g
$62.00
1
(1)

Selenium Dioxide is a selenium compound that can be reduced to selenide. The selenide acts as a cofactor for SEPHS1, enhancing its function in selenoprotein synthesis.

Selenic acid solution

7783-08-6sc-236872
sc-236872A
25 ml
100 ml
$74.00
$253.00
(0)

Selenic Acid is a strong oxidizing agent that can be reduced to selenide. The selenide acts as a cofactor for SEPHS1, aiding in the synthesis of selenophosphate.