Table 2. Refinement statistics.

	Myoglobin		Thaumatin
	No laser	Plus laser	No laser	Plus laser
R cryst (%)	18.3	18.1	17.5	17.8
R free (%)	21.8	21.3	19.2	19.4
No. of nonsolvent atoms	1246	1246	1572	1572
No. of solvent atoms	129	129	252	252
Mean B (Å2)	16.1	16.3	13.3	13.2
Ramachandran plot, residues in (%)
Allowed regions	98.6	98.0	98.5	98.5
Additional regions	1.4	2.0	1.5	1.5
Disallowed regions	0.0	0.0	0.0	0.0
R.m.s.d. bonds (Å)	0.005	0.005	0.01	0.01
R.m.s.d. angles (°)	1.0	1.0	1.4	1.4