. Author manuscript; available in PMC: 2019 Jan 4.

Published in final edited form as: J Phys Chem B. 2016 Jan 26;120(4):680–699. doi: 10.1021/acs.jpcb.5b11351

Table 4.

Variance of the FRET efficiency distribution (σ_U²) of the unfolded state calculated from the donor lifetimes τ_DU determined from the donor delay times (eq 6) and τ_DU^A from the acceptor delay times (eq 7).

Delay time Distribution	Model	α₃D	gpW	WW domain
Donor	2-state/Db	0.11	0.14	0.13
	2-state/Dbs	0.11	0.13	0.11
	4-state/D	0.11	0.13	0.09
	4-state/Ds	0.11	0.13	0.11
Acceptor	4-state/AD2s	0.15	0.14	0.12
	Gaussian chain	0.13	0.13	0.13