Table 2.

Apparent relative molecular mass of pelC complexed with ANS determined by analytical ultracentrifugation

[PelC] (μM)	Rotor speed (1000 rpm)
	18	25	33
2	44.2 (37.8, −2.9e-6)	30.7 (37.6, 1.0e-5)	25.2 (37.7, 3.6e-5)
3	50.1 (N/D)	30.1 (37.6, 2.2e-5)	23.8 (37.2, 1.7e-5)
5	49.5 (N/D)	30.6 (37.7, 4.2e-6)	29.3 (32.1, 2.1e-5)

Numbers in parentheses indicate the apparent molecular mass determined using a second virial coefficient, and the coefficient used. A mass was not determined for 3 and 5 μM at 18,000 revolutions per minute using a second virial coefficient.