Gamma-Carotene

γ-Carotene
Identifiers
CAS number
PubChem
ChemSpider
ChEBI
Jmol-3D images Image 1
Properties
Molecular formula C40H56
Molar mass 536.87 g mol−1
Melting point 160 to 162 °C (320 to 324 °F; 433 to 435 K)[1]
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)

γ-Carotene is a carotenoid, and is a biosynthetic intermediate for cyclized carotenoid synthesis in plants. It is formed from cyclization of lycopene by lycopene cyclase epsilon.[2] Along with several other carotenoids, γ-Carotene is a vitamer of vitamin A in herbivores and omnivores. Carotenoids with a cyclized, beta-ionone ring can be converted to vitamin A, also known as retinol, by the enzyme Beta-carotene 15,15'-dioxygenase; however, the bioconversion of gamma-carotene to retinol has not been well-characterized.

References

  1. ^ Ruegg, R.; Schwieter, U.; Ryser, G.; Schudel, P.; Isler, O. (1961). "Synthesen in der Carotinoid-Reihe. 17. Mittelung. γ-Carotin sowie d,l-α- und β-Carotin aus Dehydro-β-apo-12′-carotinal(C25)". Helvetica Chimica Acta 44 (4): 985–93. doi:10.1002/hlca.19610440414. 
  2. ^ Rodriguez-Concepcion M, Stange C. Biosynthesis of carotenoids in carrot: an underground story comes to light. Archives of biochemistry and biophysics. 2013;539:110-6.


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