KEGG   REACTION: R06960
Entry
R06960                      Reaction                               
Name
carotenoid psi-end group lyase (decyclizing)
Definition
all-trans-Neurosporene <=> alpha-Zeacarotene
Equation
Comment
lycopene epsilon cyclase
Reaction class
RC01612  C05431_C14146
Enzyme
Brite
Enzymatic reactions [BR:br08201]
 5. Isomerase reactions
  5.5  Intramolecular lyases
   5.5.1  Intramolecular lyases (only sub-subclass identified to date)
    5.5.1.18
     R06960  all-trans-Neurosporene <=> alpha-Zeacarotene
Orthology
K06444  lycopene epsilon-cyclase [EC:5.5.1.18]
Reference
1  [PMID:8837512]
  Authors
Cunningham FX Jr, Pogson B, Sun Z, McDonald KA, DellaPenna D, Gantt E.
  Title
Functional analysis of the beta and epsilon lycopene cyclase enzymes of Arabidopsis reveals a mechanism for control of cyclic carotenoid formation.
  Journal
Plant Cell 8:1613-26 (1996)
DOI:10.1105/tpc.8.9.1613

KEGG   REACTION: R06963
Entry
R06963                      Reaction                               
Name
carotenoid psi-end group lyase (decyclizing)
Definition
Lycopene <=> delta-Carotene
Equation
Comment
lycopene epsilon cyclase
Reaction class
RC01612  C05432_C08586
Enzyme
Pathway
rn00906  Carotenoid biosynthesis
rn01100  Metabolic pathways
rn01110  Biosynthesis of secondary metabolites
Brite
Enzymatic reactions [BR:br08201]
 5. Isomerase reactions
  5.5  Intramolecular lyases
   5.5.1  Intramolecular lyases (only sub-subclass identified to date)
    5.5.1.18
     R06963  Lycopene <=> delta-Carotene
Orthology
K06444  lycopene epsilon-cyclase [EC:5.5.1.18]
Reference
1  [PMID:8837512]
  Authors
Cunningham FX Jr, Pogson B, Sun Z, McDonald KA, DellaPenna D, Gantt E.
  Title
Functional analysis of the beta and epsilon lycopene cyclase enzymes of Arabidopsis reveals a mechanism for control of cyclic carotenoid formation.
  Journal
Plant Cell 8:1613-26 (1996)
DOI:10.1105/tpc.8.9.1613
Reference
2  [PMID:11226339]
  Authors
Cunningham FX Jr, Gantt E
  Title
One ring or two? Determination of ring number in carotenoids by lycopene epsilon-cyclases.
  Journal
Proc Natl Acad Sci U S A 98:2905-10 (2001)
DOI:10.1073/pnas.051618398
Other DBs
RHEA: 53127

KEGG   REACTION: R07840
Entry
R07840                      Reaction                               
Name
carotenoid psi-end group lyase (decyclizing)
Definition
delta-Carotene <=> epsilon-Carotene
Equation
Reaction class
RC01612  C08586_C16276
Enzyme
Pathway
rn00906  Carotenoid biosynthesis
rn01100  Metabolic pathways
rn01110  Biosynthesis of secondary metabolites
Brite
Enzymatic reactions [BR:br08201]
 5. Isomerase reactions
  5.5  Intramolecular lyases
   5.5.1  Intramolecular lyases (only sub-subclass identified to date)
    5.5.1.18
     R07840  delta-Carotene <=> epsilon-Carotene
Orthology
K06444  lycopene epsilon-cyclase [EC:5.5.1.18]
Other DBs
RHEA: 53131

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