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Violaksantin deepoksidaza

Izvor: Wikipedija
Violaksantin deepoksidaza
Identifikatori
EC broj 1.10.99.3
CAS broj 57534-73-3
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB RCSB PDB PDBe PDBj PDBsum

Violaksantin deepoksidaza (EC 1.10.99.3, VDE) je enzim sa sistematskim imenom violaksantin:askorbat oksidoreduktaza.[1][2][3][4][5][6][7] Ovaj enzim katalizuje sledeću hemijsku reakciju

violaksantin + 2 L-askorbat zeaksantin + 2 L-dehidroaskorbat + 2H2O (sveukupna reakcija)
(1a) violaksantin + L-askorbat anteraksantin + L-dehidroaskorbat + H2O
(1b) antheraksantin + L-askorbat zeaksantin + L-dehidroaskorbat + H2O

Zajedno sa EC 1.14.13.90, zeaksantinskom epoksidazom, ovaj enzim formira deo ksantofilnog (ili violaksantinskog) ciklusa za kontrolu koncentracije zeaksantina u hloroplastima.

Reference

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  1. Yamamoto, H.Y. and Higashi, R.M. (1978). „Violaxanthin de-epoxidase. Lipid composition and substrate specificity”. Arch. Biochem. Biophys. 190: 514-522. PMID 102251. 
  2. Rockholm, D.C. and Yamamoto, H.Y. (1996). „Violaxanthin de-epoxidase”. Plant Physiol. 110: 697-703. PMID 8742341. 
  3. Bugos, R.C., Hieber, A.D. and Yamamoto, H.Y. (1998). „Xanthophyll cycle enzymes are members of the lipocalin family, the first identified from plants”. J. Biol. Chem. 273: 15321-15324. PMID 9624110. 
  4. Kuwabara, T., Hasegawa, M., Kawano, M. and Takaichi, S. (1999). „Characterization of violaxanthin de-epoxidase purified in the presence of Tween 20: effects of dithiothreitol and pepstatin A”. Plant Cell Physiol. 40: 1119-1126. PMID 10635115. 
  5. Latowski, D., Kruk, J., Burda, K., Skrzynecka-Jaskierm, M., Kostecka-Gugala, A. and Strzalka, K. (2002). „Kinetics of violaxanthin de-epoxidation by violaxanthin de-epoxidase, a xanthophyll cycle enzyme, is regulated by membrane fluidity in model lipid bilayers”. Eur. J. Biochem. 269: 4656-4665. PMID 12230579. 
  6. Goss, R. (2003). „Substrate specificity of the violaxanthin de-epoxidase of the primitive green alga Mantoniella squamata (Prasinophyceae)”. Planta 217: 801-812. PMID 12748855. 
  7. Latowski, D., Akerlund, H.E. and Strzalka, K. (2004). „Violaxanthin de-epoxidase, the xanthophyll cycle enzyme, requires lipid inverted hexagonal structures for its activity”. Biochemistry 43: 4417-4420. PMID 15078086. 

Literatura

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Spoljašnje veze

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