Table 4.

Enzyme-substrate hydrogen bonds in the S112C+HOPDA complex.

Substrate	Active site residues	Distance (Å)
C1-carboxylate O1	Arg190 Nη2	3.0
C1-carboxylate O1	Gly43 N	3.0
C1-carboxylate O2	Arg190 Nη1	3.0
C1-carboxylate O2	Trp266 Nε1	3.2
C1-carboxylate O2	Asn51 Nδ2	3.0
C2-carbonyl O3	His265 Nε2	3.3
C2-carbonyl O3	Asn111 Nδ2	2.9
C2-carbonyl O3	Trp266 Nε1	3.0
C6-carbonyl O4	Gly42 N	2.9
C6-carbonyl O4	Met113 N	2.8