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. 2011 Jul 13;67(Pt 8):851–857. doi: 10.1107/S1744309111018860

Table 3. Hydrogen bonding at the Arg75 side chain in the 3q20 and 2peq structures as calculated by WHAT IF (Hooft et al., 1996 ▶).

Distances are given in Å. Unrealistically short interatomic distances are indicated in italics.

	Chain A						Chain B
3q20	Arg75	N^∊	Asn98	O^δ1	B	2.86	Arg75	N^∊	Asn98	O^δ1	A	2.83
		N^η1	Glu54	O^∊2	A	2.56		N^η1	Glu54	O^∊2	B	2.72
		N^η1	Thr19	O^γ1	A	2.86		N^η1	Thr19	O^γ1	B	2.83
		N^η2	Glu54	O^∊1	A	3.01		N^η2	Glu54	O^∊1	B	3.14
		N^η2	Asn98	O^δ1	B	2.86		N^η2	Asn98	O^δ1	A	2.86
2peq	Arg75	N^∊	Thr19	O^γ1	A	3.20	Arg75	N^∊	Asn98	O^δ1	A	2.88
		N^η1	Ser97	O^γ	B	3.40		N^η1	Wat20	O	—	2.68
		N^η1	Asn98	O^δ1	B	3.24		N^η1	Thr19	O^γ1	B	2.92
		N^η2	Wat11	O	—	2.33		N^η2	Ser97	O^γ	A	2.90
		N^η2	Thr19	O^γ1	A	2.92		N^η2	Asn98	O^δ1	A	2.83