. Author manuscript; available in PMC: 2011 Mar 10.

Published in final edited form as: J Am Chem Soc. 2010 Mar 10;132(9):2983–2990. doi: 10.1021/ja908395r

Table 1.

Properties of lumazine derivatives.

Sample	pK_a	Absorbance maxima, nm		Isosbestic points, nm

		pH 6.9	pH 11.0
1 (aqueous solution)	7.9	407	312	346
1 in complex with wild type riboflavin synthase	8.0	413	318, 370	378
1 in complex with riboflavin synthase mutant T50A	10.1	409	317, 376	369
1 in complex with riboflavin synthase mutant T67A	8.9	418	315, 375	375
6 (aqueous solution)	9.8	401	311, 360	369