ENZYME entry: EC 5.5.1.19

Accepted Name
Lycopene beta-cyclase.
Reaction catalysed
Carotenoid psi-end group <=> carotenoid beta-end group
Cofactor(s)
NAD(P)H.
Comment(s)
  • Lycopene has a psi-end group at both ends.
  • When acting on one end, this enzyme forms gamma-carotene.
  • When acting on both ends it forms beta-carotene.
  • It also acts on neurosporene to give beta-zeacarotene.
  • The hydrogen introduced at C-2 originates from water, not from NAD(P)H.
  • Formerly EC 5.5.1.n2.
Cross-references
BRENDA5.5.1.19
EC2PDB5.5.1.19
ExplorEnz5.5.1.19
PRIAM enzyme-specific profiles5.5.1.19
KEGG Ligand Database for Enzyme Nomenclature5.5.1.19
IUBMB Enzyme Nomenclature5.5.1.19
IntEnz5.5.1.19
MEDLINEFind literature relating to 5.5.1.19
MetaCyc5.5.1.19
UniProtKB/Swiss-Prot
B0R753, CRTY_HALS3;  Q9HNE5, CRTY_HALSA;  E4UPP6, LCPS_ARTGP;  
A2QM49, LCPS_ASPNC;  Q2U4X9, LCPS_ASPOR;  Q67GH9, LCPS_BLATR;  
E3Q717, LCPS_COLGM;  Q8X0Z1, LCPS_GIBFU;  E4ZUB5, LCPS_LEPMJ;  
Q9UUQ6, LCPS_MUCCL;  P37295, LCPS_NEUCR;  Q0V6M5, LCPS_PHANO;  
Q7Z859, LCPS_PHARH;  Q9P854, LCPS_PHYBL;  B2ATB0, LCPS_PODAN;  
B2WAQ3, LCPS_PYRTR;  D1Z4K7, LCPS_SORMK;  E6ZZ11, LCPS_SPORE;  
D4D802, LCPS_TRIVH;  Q4P0S6, LCPS_USTMA;  Q38933, LCYB_ARATH;  
Q43415, LCYB_CAPAN;  Q40424, LCYB_NARPS;  Q43503, LCYB_SOLLC;  
Q55276, LCYB_SYNE7;  Q43578, LCYB_TOBAC;  

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 5.5.1.-
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