Table 1.

Calculated chain conformation values that specify the steady-state fraction of knots for 7-kb circular DNA

G segment conformation	P	ruk	P	rku	Ck/Cu	P/P	rku/ruk	Pk
Hairpin	0.00064	0.018	0.0085	0.95	0.0014	13	53	0.014
Straight	0.0028	0.050	0.0093	0.76	0.020	3.3	15	0.014

P and P are the probabilities of juxtaposition of a potential T segment and G segment; r_uk and r_ku are coefficients which specify the fractions of strand passages that change topology; P_k is the equilibrium probability of knotting.