KEGG   ENZYME: 1.13.11.65Help
Entry
EC 1.13.11.65               Enzyme                                 

Name
carotenoid isomerooxygenase;
ninaB (gene name)
Class
Oxidoreductases;
Acting on single donors with incorporation of molecular oxygen (oxygenases);
With incorporation of two atoms of oxygen
BRITE hierarchy
Sysname
zeaxanthin:oxygen 15,15'-oxidoreductase (bond-cleaving, cis-isomerizing)
Reaction(IUBMB)
zeaxanthin + O2 = (3R)-11-cis-3-hydroxyretinal + (3R)-all-trans-3-hydroxyretinal [RN:R10192]
Reaction(KEGG)
Substrate
zeaxanthin [CPD:C06098];
O2 [CPD:C00007]
Product
(3R)-11-cis-3-hydroxyretinal [CPD:C18195];
(3R)-all-trans-3-hydroxyretinal [CPD:C18196]
Comment
The enzyme, characterized from the moth Galleria mellonella and the fruit fly Drosophila melanogaster, is involved in the synthesis of retinal from dietary caroteoids in insects. The enzyme accepts different all-trans carotenoids, including beta-carotene, alpha-carotene and lutein, and catalyses the symmetrical cleavage of the carotenoid and the simultaneous isomerization of only one of the products to a cis configuration. When the substrate is hydroxylated only in one side (as in cryptoxanthin), the enzyme preferentially isomerizes the hydroxylated part of the molecule.
History
EC 1.13.11.65 created 2012 as EC 1.14.13.164, transferred 2012 to EC 1.13.11.65
Orthology
K18048  
carotenoid isomerooxygenase
Genes
DME: 
DPO: 
DAN: 
DER: 
DPE: 
DSE: 
DSI: 
Dsimw501_GD18923(Dsim_GD18923)
DWI: 
DYA: 
Dyak_GE26290(dyak_GLEANR_9844)
DGR: 
DMO: 
DVI: 
MDE: 
AGA: 
AAG: 
CQU: 
AME: 
410521(ninaB)
SOC: 
AEC: 
HST: 
CFO: 
NVI: 
TCA: 
BMOR: 
101740058(ninaB-1)
PXY: 
API: 
LGI: 
 » show all
Taxonomy
Reference
1  [PMID:19020100]
  Authors
Oberhauser V, Voolstra O, Bangert A, von Lintig J, Vogt K
  Title
NinaB combines carotenoid oxygenase and retinoid isomerase activity in a single polypeptide.
  Journal
Proc. Natl. Acad. Sci. U. S. A. 105 (2008) 19000-5.
  Sequence
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 

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