Peridinin-chlorophyll-protein complex
| Peridinin-chlorophyll A binding protein | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Crystal structure of the soluble peridinin-chlorophyll-protein complex from the photosynthetic dinoflagellate Amphidinium carterae. This complex is found in many photosynthetic dinoflagellates and involves a boat or cradle-shaped protein with two pseudosymmetrical repeats of eight alpha helices (shown in blue and orange) wrapped around a pigment-filled central cavity. Each eight-helix segment binds one chlorophyll molecule (green, with central magnesium ion shown as a green sphere), one diacylglycerol molecule (yellow) and four peridinin molecules (gray). | |||||||||
| Identifiers | |||||||||
| Symbol | PCP | ||||||||
| Pfam | PF02429 | ||||||||
| InterPro | IPR003376 | ||||||||
| SCOP2 | 1ppr / SCOPe / SUPFAM | ||||||||
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The peridinin-chlorophyll-protein complex (PCP or PerCP) is a soluble molecular complex consisting of the peridinin-chlorophyll a-protein bound to peridinin, chlorophyll, and lipids. The peridinin molecules absorb light in the blue-green wavelengths (470 to 550 nm) and transfer energy to the chlorophyll molecules with extremely high efficiency. PCP complexes are found in many photosynthetic dinoflagellates, in which they may be the primary light-harvesting complexes.