Table 1. Percentages of the different species observed by SEC.

	[protein] (µM)	M (%)	D (%)	O (%)
BlaP	50	95.1	4.9	0
	120	94.4	5.6	0
BlaP(Gln)23	50	99.4	0.6	0
	120	99.3	0.7	0
BlaP(Gln)30	50	99.6	0.4	0
	120	99.5	0.5	0
BlaP(Gln)55	50	98.9	1.1	0
	120	98.6	1.4	0
BlaP(Gln)79	10	97.3	0.9	1.8
	50	96.4	1.1	2.5
	120	95.3	1.2	3.5

This analysis was carried out using a Superdex 200 GL 10/300 column using PBS buffer, pH 7.5. M, D, O stand for monomeric, dimeric, and high molecular weight oligomeric species, respectively.