Table 4. Dwell Times for Hybrid, Classical, and “Slow” States from the Fittings to Three Exponential Distributions (Experimental Procedures)^a.

	hybrid state		classical state		“slow” state
amino acid	dwell time (s)	population (%)	dwell time (s)	population (%)	dwell time (s)	population (%)
l-α-Phe	0.44 ± 0.11	30.1 ± 3.6	6.12 ± 0.68	48.2 ± 3.1	59.17 ± 3.12	21.7 ± 1.7
p-Az-Phe	0.87 ± 0.08	53.3 ± 2.2	8.45 ± 1.13	26.2 ± 1.6	67.46 ± 3.35	20.5 ± 1.2
d-α-Phe	1.76 ± 0.10	37.1 ± 1.3	16.91 ± 2.05	40.4 ± 3.6	70.05 ± 10.38	22.5 ± 4.3
(S)-β3-Phe	0.53 ± 0.07	33.6 ± 2.9	11.81 ± 0.83	46.7 ± 2.2	47.56 ± 3.76	19.7 ± 2.5
(R)-β3-Phe	0.33 ± 0.03	33.9 ± 0.9	4.67 ± 0.80	12.1 ± 1.2	80.79 ± 3.31	54.0 ± 1.1

^aPhotobleaching lifetime is 165.8 ± 0.03 s.