Fig. 4: The pigment arrangements in Symbiodinium PSI core.
From: Architecture of symbiotic dinoflagellate photosystem I–light-harvesting supercomplex in Symbiodinium
a Superposition of the Chl sites in Symbiodinium (Sy) PSI core (red) with those in diatom (Dia) PSI core (blue). Fourteen Chl sites in diatom PsaA subunits are labeled as A1-A14, and the corresponding sites in PsaB are labeled as B1-B14. The previously unidentified Chl sites in Symbiodinium PSI core are indicated by solid arrows. The shifted Chls are indicated by dashed arrows. b Superposition of the Car sites in Symbiodinium PSI core (red) with those in diatom PSI core (blue). Four Car sites of diatom PsaA subunits are labeled as ACar1-ACar4, and the corresponding sites in PsaB are labeled as BCar1-BCar4. The previously unidentified Car site in Symbiodinium PSI core is indicated by solid arrow. Superposition of the PsaA subunits (c–d) and PsaB subunits (e–f) of Symbiodinium (red) and diatom (blue), showing the differences in pigment associations. Chls and Cars in Symbiodinium, and Chls and Cars in diatom are colored in pink, blue, green, and magenta, respectively.
