Table 1. Tm values with and without L- and D-arginine.

Protein	L-Arginine			D-Arginine
	0 mM	1 mM	10 mM	0 mM	1 mM	10 mM
NgNAGS	52.95 ± 0.04a	50.47 ± 0.03	53.00 ± 0.15	53.09 ± 0.10	53.09 ± 0.25	52.60 ± 0.22
MmNAGS-K	39.26 ± 0.24	44.55±0.10	49.63 ± 0.04	39.02 ± 0.15	39.32 ± 0.08	38.73 ± 0.18
XcNAGS-K	57.87 ± 0.21	ndb	nd	58.11 ± 0.37	57.92 ± 0.49	57.13 ± 0.46
mNAGS-M	48.60 ± 0.14	50.78 ± 0.04	52.96 ± 0.04	48.84 ± 0.10	49.05 ± 0.09	49.58 ± 0.17
mNAGS-C	48.86 ± 0.17	51.48 ± 0.03	53.64 ± 0.06	48.87 ± 0.25	48.89 ± 0.06	49.42 ± 0.42

^aValues are means of three measurements and the associated standard deviations.

^bNot determined.