Peridinin
IUPAC name	Acetic acid [(1S,3R)-3-hydroxy-4-[(3E,5E,7E,9E,11Z)-11-[4-[(E)-2-[(1S,4S,6R)-4-hydroxy-2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-1-yl]vinyl]-5-oxo-2-furylidene]-3,10-dimethylundeca-1,3,5,7,9-pentaenylidene]-3,5,5-trimethylcyclohexyl] ester
Identifiers
CAS number	33281-81-1
PubChem	5289155
SMILES	[H][C@@](/[C@@](C)=C/C=C/C=C/C=C(C)/C=C2C=C(/C=C/[C@@]3(O4)[C@]4(C)C[C@@H](O)CC(C)3C)C(O\2)=O)=C=C1[C@](C)(O)C[C@@H](OC(C)=O)CC(C)1C
Properties
Molecular formula	C39H50O7
Molar mass	630.81 g/mol
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Peridinin is a light-harvesting carotenoid, a pigment associated with chlorophyll and found in the peridinin-chlorophyll-protein (PCP) light-harvesting complex in dinoflagellates, best studied in Amphidinium carterae.^[1] The PCP complex is unique in its high ratio of peridinin to chlorophyll; most light-harvesting complexes contain more chlorophyll than carotenoids, but the PCP contains eight peridinin and two chlorophyll molecules arranged to promote peridinin-chlorophyll energy transfer. The PCP complex is a protein trimer with an unusual alpha solenoid protein fold.

The peridinin-chlorophyll-protein light-harvesting complex. The peridinin molecules are pink and the chlorophyll molecules are black.

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