TABLE 3.

Residues in the active site of NDO-R (structure 2) which interact with indole and residues in NDO-P (1EG9.pdb) and BPDO-R (1ULJ.pdb) that are in similar spatial orientations

NDO-R residue	Residue in similar spatial orientation
	NDO-P	BPDO-R
N209	N201	Q217
F210	F202	F218
D213	D205	D221
A214	A206	M222
H216	H208	H224
T217	V209	A225
F293	F224	—a
H295	N297	H313
F307	L307	L323
F362	F352	F368
F368	W358	F374

^a—, no corresponding residue.