Table 2. Residues involved in hydrogen bonds between subunits in the PhThiK trimer.

	Subunits A and B			Subunits B and C			Subunits A and C
	A	B	Distance (Å)	B	C	Distance (Å)	A	C	Distance (Å)
1	Val25 O	Asn28 ND2	2.90	Val25 O	Asn28 ND2	2.90	Asn28 ND2	Val25 O	2.90
2	Asp68 OD2	His45 NE2	2.86	Asp68 OD2	His45 NE2	2.86	Asn32 OD1	Thr191 N	2.66
3	Thr99 OG1	Glu49 OE1	2.78	Thr99 OG1	Glu49 OE1	2.78	Leu35 O	Arg189 NH1	2.99
4	Lys100 N	Glu52 OE1	2.79	Lys100 N	Glu52 OE1	2.79	His45 NE2	Asp68 OD2	2.86
5	Arg102 NE	Glu49 OE1	2.65	Arg102 NE	Glu49 OE1	2.65	Glu49 OE1	Thr99 OG1	2.79
6	Arg102 NH2	Glu49 OE2	2.93	Arg102 NH2	Glu49 OE2	2.93	Glu49 OE1	Arg102 NE	2.65
7	Arg189 NH1	Leu35 O	2.99	Arg189 NH1	Leu35 O	2.99	Glu49 OE2	Arg102 NH2	2.93
8	Thr191 N	Asn32 OD1	2.66	Thr191 N	Asn32 OD1	2.66	Glu52 OE1	Lys100 N	2.79
9	Gly236 N	Asp244 OD1	2.72	Gly236 N	Asp244 OD1	2.72	Asp244 OD1	Gly236 N	2.72
10	Ser237 N	Asp244 OD1	2.82	Ser237 N	Asp244 OD1	2.82	Asp244 OD1	Ser237 N	2.82
11	Ser237 OG	Asp244 OD2	2.53	Ser237 OG	Asp244 OD2	2.53	Asp244 OD2	Ser237 OG	2.53