Table 3.

Salt bridges and hydrogen bonds involved in the ColD–ImmD complex

Colicin D	Distance (Å)	ImmD
Lys 607 Nζ	3.0	Oɛ1 Glu 59
Lys 608 Nζ	3.1	Oɛ2 Glu 56
Lys 610 O	2.9	Nη2 Arg 32
His 611 Nɛ2	2.6	Oɛ1 Glu 56
Asp 614 Oδ1	2.8	Nɛ Arg 32
Glu 652 Oɛ1	2.6	Oη Tyr 67
Ser 677 Oγ	2.7	Oɛ2 Glu 56
Lys 680 O	2.7	Nη1 Arg 31
Lys 680 O	2.8	Nη2 Arg 31
Ile 681 O	2.7	Oη Tyr 35
Asp 686 N	2.8	Oδ1 Asn 46