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IPR017079 is a Zeaxanthin epoxidase.
<p>This entry represents the enzyme zeaxanthin epoxidase ([ec:1.14.13.90]), which is involved in the epoxidation of zeaxanthin as part of the biosynthesis of the plant hormone abscisic acid (ABA). ABA is a sesquiterpenoid (15-carbon) which is partially produced via the mevalonic pathway in chloroplasts and other plastids (therefore its biosynthesis primarily occurs in the leaves). The production of ABA is accentuated by stresses such as water loss and freezing temperatures.</p> <p>The enzyme zeaxanthin epoxidase converts zeaxanthin into antheraxanthin and subsequently into violaxanthin. This enzyme also acts on beta-cryptoxanthin. Zeaxanthin epoxidase plays an important role in resistance to stresses, seed development and dormancy [[cite:PUB00044633]].</p>
This description is obtained from EB-eye REST.
GO predictions are based solely on the InterPro-to-GO mappings published by EMBL-EBI, which are in turn based on the mapping of predicted domains to the InterPro dataset. The InterPro-to-GO mapping was last updated on , while the GO metadata was last updated on .
| GO term | Namespace | Name | Definition | Relationships |
|---|---|---|---|---|
| Cellular component | Chloroplast | A chlorophyll-containing plastid with thylakoids organized into grana and frets, or stroma thylakoids, and embedded in a stroma. | ||
| Molecular function | Zeaxanthin epoxidase [overall] activity | Catalysis of the reactions: zeaxanthin + NAD(P)H + H+ + O2 = antheraxanthin + NAD(P)+ + H2O; and antheraxanthin + NAD(P)H + H+ + O2 = violaxanthin + NAD(P)+ + H2O. | ||
| Biological process | Abscisic acid biosynthetic process | The chemical reactions and pathways resulting in the formation of abscisic acid, 5-(1-hydroxy-2,6,6,trimethyl-4-oxocyclohex-2-en-1-y1)-3-methylpenta-2,4-dienoic acid. | ||
| Cellular component | Membrane | A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it. | ||
| Biological process | Oxidation-reduction process | A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons. |
| Transcript | Name | Description | Predicted domains | Domain count |
|---|---|---|---|---|
| – | PREDICTED: zeaxanthin epoxidase, chloroplastic-like [Cicer arietinum] gi|502160849|ref|XP_004511928.1| | 23 | ||
| – | PREDICTED: zeaxanthin epoxidase, chloroplastic-like [Cicer arietinum] gi|502152894|ref|XP_004509142.1| | 21 | ||
| – | Zeaxanthin epoxidase, chloroplastic; TAIR: AT5G67030.1 zeaxanthin epoxidase (ZEP) (ABA1); Swiss-Prot: sp|O81360|ABA2_PRUAR Zeaxanthin epoxidase, chloroplastic; TrEMBL-Plants: tr|I1LHE5|I1LHE5_SOYBN Zeaxanthin epoxidase, chloroplastic; Found in the gene: LotjaGi2g1v0401800 | 24 | ||
| – | Zeaxanthin epoxidase, chloroplastic; TAIR: AT5G67030.1 zeaxanthin epoxidase (ZEP) (ABA1); Swiss-Prot: sp|O81360|ABA2_PRUAR Zeaxanthin epoxidase, chloroplastic; TrEMBL-Plants: tr|I1MVX7|I1MVX7_SOYBN Zeaxanthin epoxidase, chloroplastic; Found in the gene: LotjaGi4g1v0105000 | 22 |
A list of co-occurring predicted domains within the L. japonicus gene space:
| Predicted domain | Source | Observations | Saturation (%) |
|---|---|---|---|
| cd00060 | CDD | 1 | 25.00 |