Table 1.

Relevant parameters from the LD measurements (see Appendix)

	RC only			X− cores			X+ cores
	P	B	H	LH1	B	H	LH1	B	H	P
LDr*	0.008	0.04	−0.08	0.25	0.12	−0.23	0.26	−0.1	−0.17	—
LDr"†	—	2	−1	—	2	−1	—	−2.6	−1.5	—
θ‡	90°	66°	35°	90°	66°	35°	90°	66°	35°	—
φ‡	—	—	—	—	—	—	—	55°	33°	80°§

^*LD_r values presented here as LD/A with A = A_z (measured simultaneously with LD). Because we only use ratios for calculating angles, we do not need the isotropic absorption. 

^† LD_r" is the measured LD_r for RC-only membranes normalized to the LD_r of P and for the PufX⁻ and PufX⁺ membranes normalized to the LD_r of LH1. 

^‡ θ and φ are calculated by comparing the measured values of LD_r" with Eqs. 5 and 8, respectively. For RC-only membranes, the angle θ is assumed 90° for the longwavelength transition of P; for PufX⁺ and PufX⁻ membranes, the angle θ is assumed 90° for the longwavelength transition of LH1. 

^§ This value is estimated from the ΔLD signal and the absorption of P.