TABLE 2.

Protein contacts in the interfaces between monomers

Contacts were predicted by Protein Interfaces, Surfaces. and Assemblies service (see Ref. 23).

Hydrogen bonds
Residue (molecule A)	Distance	Residue (molecule B)
	Å
Val-19(N)	3.01	Cys-121(O)
Ser-20(N)	3.45	Tyr-152(OH)
Tyr-228(OH)	3.51	Cys-223(SG)
Leu-382(N)	3.00	Asn-270(OD1)
Tyr-195(OH)	3.51	Ala-233(N)
Pro-248(O)	3.08	Tyr-232(OH)
Asn-252(OD1)	2.77	Tyr-232(OH)
Arg-326(O)	2.65	Ser-219(OG)
Val-327(O)	2.92	Arg-216(NH2)
Asp-379(OD1)	3.00	Arg-220(NH2)
Asp-379(OD2)	2.70	Arg-220(NH1)

Salt bridges
Residue (molecule A)	Distance (Å)	Residue (molecule B)
Asp-379(OD1)	3.00	Arg-220(NH2)
Asp-379(OD2)	2.70	Arg-220(NH1)