Q84K96 · ZCD_CROSA
- ProteinZeaxanthin 7,8(7',8')-cleavage dioxygenase, chromoplastic
- GeneZCD
- StatusUniProtKB reviewed (Swiss-Prot)
- Organism
- Amino acids369 (go to sequence)
- Protein existenceEvidence at protein level
- Annotation score3/5
Function
function
Cleaves zeaxanthin symmetrically at the 7-8 and 7'-8' double bonds to produce crocetin dialdehyde and hydroxy-beta-cyclocitral, two water-soluble precursors sequestred in vacuoles and involved in the synthesis of saffron pigment and aroma.
Catalytic activity
- all-trans-zeaxanthin + 2 O2 = 2 3beta-hydroxy-beta-cyclocitral + crocetin dialdehyde
Cofactor
Note: Binds 1 Fe2+ ion per subunit.
Features
Showing features for binding site.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | chloroplast stroma | |
Cellular Component | chromoplast | |
Molecular Function | carotenoid dioxygenase activity | |
Molecular Function | metal ion binding | |
Biological Process | carotene catabolic process |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameZeaxanthin 7,8(7',8')-cleavage dioxygenase, chromoplastic
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Asparagales > Iridaceae > Crocoideae > Croceae > Crocus
Accessions
- Primary accessionQ84K96
Subcellular Location
PTM/Processing
Features
Showing features for chain, transit peptide.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000282608 | ?-369 | Zeaxanthin 7,8(7',8')-cleavage dioxygenase, chromoplastic | |||
Sequence: MQVDPTKGIGLANTSLQFSNGRLHALCEYDLPYVVRLSPEDGDISTVGRIENNVSTKSTTAHPKTDPVTGETFSFSYGPIQPYVTYSRYDCDGKKSGPDVPIFSFKEPSFVHDFAITEHYAVFPDIQIVMKPAEIVRGRRMIGPDLEKVPRLGLLPRYATSDSEMRWFDVPGFNMVHVVNAWEEEGGEVVVIVAPNVSPIENAIDRFDLLHVSVEMARIELKSGSVSRTLLSAENLDFGVIHRGYSGRKSRYAYLGVGDPMPKIRGVVKVDFELAGRGECVVARREFGVGCFGGEPFFVPASSKKSGGEEDDGYVVSYLHDEGKGESSFVVMDARSPELEILAEVVLPRRVPYGFHGLFVTEAELLSQQ | ||||||
Transit peptide | 1-? | Chromoplast |
Expression
Tissue specificity
In the style branches.
Induction
By dehydration.
Structure
Family & Domains
Sequence similarities
Belongs to the carotenoid oxygenase family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Sequence processingThe displayed sequence is further processed into a mature form.
- Length369
- Mass (Da)40,750
- Last updated2003-06-01 v1
- Checksum7ADF336B2AED9CCD