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Literature summary for 1.14.15.24 extracted from

  • Kim, S.H.; Ahn, Y.O.; Ahn, M.J.; Lee, H.S.; Kwak, S.S.
    Down-regulation of beta-carotene hydroxylase increases beta-carotene and total carotenoids enhancing salt stress tolerance in transgenic cultured cells of sweetpotato (2012), Phytochemistry, 74, 69-78.
    View publication on PubMed
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Cloned(Commentary)

Cloned (Comment) Organism
expressed in calli of Ipomoea batatas cultivar Yulmi Ipomoea batatas

Metals/Ions

Metals/Ions Comment Organism Structure
Iron a non-heme di-iron hydroxylase Ipomoea batatas

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
beta-carotene + 2 reduced ferredoxin [iron-sulfur] cluster + H+ + O2 Ipomoea batatas
-
 beta-cryptoxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?
beta-cryptoxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + H+ + O2 Ipomoea batatas
-
 zeaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?

Organism

Organism UniProt Comment Textmining
Ipomoea batatas H6TBL3 cultivar Shinhwangmi
-

Source Tissue

Source Tissue Comment Organism Textmining
root
-
 Ipomoea batatas
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
beta-carotene + 2 reduced ferredoxin [iron-sulfur] cluster + H+ + O2
-
 Ipomoea batatas beta-cryptoxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?
beta-cryptoxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + H+ + O2
-
 Ipomoea batatas zeaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?

Synonyms

Synonyms Comment Organism
beta-carotene hydroxylase
-
 Ipomoea batatas
CHY-beta
-
 Ipomoea batatas
CHY1/2
-
 Ipomoea batatas

Expression

Organism Comment Expression
Ipomoea batatas enzyme down-regulation increases beta-carotene contents (38fold) and total carotenoids in transgenic plant cells and enhances their antioxidant capacity down

General Information

General Information Comment Organism
metabolism a key regulatory enzyme in the beta-beta-branch of carotenoid biosynthesis Ipomoea batatas