Assignment of chlorophyll d in the ChlD1 site of the electron transfer chain of far-red light acclimated photosystem II supported by MCCE binding calculations.

• Binding affinity differences for Chl a , d and f were calculated for PSII structures. • Chl d binds to the Chl D1 site in far-red light-absorbing PSII with high selectivity. • The calculations suggest that many sites bind a mixture of Chl a and f. [ABSTRACT FROM AUTHOR]