UniProt:Q0JCU7 ZEP

chain
  • transit peptide:1-50
  • chain:51-659
checksum E9F78E61F1DB036B
comment
  • FUNCTION Zeaxanthin epoxidase that plays an important role in the xanthophyll cycle and abscisic acid (ABA) biosynthesis. Converts zeaxanthin into antheraxanthin and subsequently violaxanthin. Required for resistance to osmotic and drought stresses, seed development and dormancy.CATALYTIC ACTIVITY all-trans-zeaxanthin + 4 reduced [2Fe-2S]-[ferredoxin] + 2 O2 + 4 H(+) = all-trans-violaxanthin + 4 oxidized [2Fe-2S]-[ferredoxin] + 2 H2OCOFACTOR Plant hormone biosynthesis; abscisate biosynthesis.SUBCELLULAR LOCATION Expressed in young microspores.INDUCTION By cold in microspores.DISRUPTION PHENOTYPE Accumulation of endogenous zeaxanthin and reduced level of ABA. Wilty phenotype, increased water loss and premature seed germination.
created [InstanceEdit:1164949] Wu, Guanming, 2010-12-11
crossReference
databaseName UniProt
dbId 1158856
description
  • recommendedName: Zeaxanthin epoxidase, chloroplastic shortName: OsZEP1 ecNumber: 1.14.15.21 alternativeName: Protein ABA DEFICIENT 1 shortName: OsABA1
displayName UniProt:Q0JCU7 ZEP
geneName
  • ZEP
  • ABA1
  • Os04g0448900
  • LOC_Os04g37619
  • OSJNBa0064H22.16
identifier Q0JCU7
isSequenceChanged false
keyword
  • Abscisic acid biosynthesis
  • Chloroplast
  • FAD
  • Flavoprotein
  • Membrane
  • Oxidoreductase
  • Plastid
  • Reference proteome
  • Stress response
  • Thylakoid
  • Transit peptide
modified [InstanceEdit:9939033] Weiser, Joel, 2025-02-21
name
  • ZEP
referenceDatabase [ReferenceDatabase:2] UniProt
schemaClass ReferenceGeneProduct
secondaryIdentifier
  • ZEP_ORYSJ
  • A0A0P0WB86
  • Q7XV26
  • Q9AVE7
sequenceLength 659
species [Species:1250427] Oryza sativa subsp. japonica
url http://purl.uniprot.org/uniprot/Q0JCU7