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. Author manuscript; available in PMC: 2022 Jul 14.
Published in final edited form as: Chem Rev. 2021 Jun 15;121(13):7957–8094. doi: 10.1021/acs.chemrev.1c00138

Table 3.

Relevant inter-Zn(II), Zn(II)-water, amino acid side chains-water, and hydrolysis product-enzyme distances in the active site of MBLs obtained from X-ray crystallographic structures of EP(a) or EI(b) complexes. Res. : crystal structure resolution (in Å); ch. : crystal structure chain; ref. : reference publication for the crystal structure.

Penicillins Distance (Å)
PDB code Enzyme Res.(Å) Hydrolyzed β-lactam (adduct) Ref. Ch. Zn1-Zn2 Wat1-Zn1 Wat1-Zn2 Wat2-Zn2 C7O-Zn1 C7O-Zn2 C3O-Zn2 N4-Zn2
3Q6X NDM-1a (B1) 1.3 ampicillin (EP) 258 A 4.6 2.1 3.0 - 2.4 4.3 2.2 2.2
B 4.6 2.0 3.0 - 2.5 4.3 2.2 2.2
4EYF NDM-1a (B1) 1.8 benzylpenicillin (EP) 229 A 4.6 1.9 3.1 - 2.5 4.4 2.2 2.2
B 4.6 2.0 3.1 - 2.4 4.4 2.1 2.2
4EY2 NDM-1a (B1) 1.2 methicillin (EP) 229 A 4.6 2.0 3.0 - 2.5 4.4 2.2 2.1
B 4.6 2.0 3.0 - 2.5 4.4 2.2 2.2
4EYB NDM-1a (B1) 1.2 oxacillin (EP) 229 A 4.5 2.0 2.9 - 2.5 4.4 2.2 2.1
B 4.6 2.0 3.0 - 2.5 4.4 2.1 2.1
Cephalosporins
PDB code Enzyme Res.(Å) Hydrolyzed β-lactam (adduct) Ref. Ch. Zn1-Zn2 Wat1-Zn1 Wat1-Zn2 Wat2-Zn2 C8O-Zn1 C8O-Zn2 C4O-Zn2 N5-Zn2
2AIO L1 (B3)a 1.7 moxalactam (EP) 330 A 3.7 2.0 2.2 - 2.4 4.2 2.3 2.4
4RL0 NDM-1b (B1) 1.3 cefuroxime (EI) 329 A 3.8 2.0 2.2 - 2.8 4.2 2.1 2.4
B 3.8 2.0 2.2 - 2.9 4.2 2.2 2.3
4RL2 NDM-1a (B1) 2.0 cephalexin (EP) 329 A 4.5 1.8 3.0 - 2.5 4.3 2.3 2.4
B 4.5 2.0 2.8 - 2.4 4.3 2.3 2.4
Carbapenems
PDB code Enzyme Res.(Å) Hydrolyzed β-lactam (adduct) Ref. Ch. Zn1-Zn2 Wat1-Zn1 Wat1-Zn2 Wat2-Zn2 C7O-Zn1 C7O-Zn2 C3O-Zn2 N4-Zn2
5N5I VIM-1a (B1) 2.2 meropenem (EP) 259 A 3.5 1.8 2.3 - 6.0; 6.4 6.3; 5.8 2.6 3.0
4EYL NDM-1a (B1) 1.9 meropenem (EP) 229 A 4.0 - - - 2.3 2.5 3.0 2.2
B 3.9 - - - 2.2 2.7 2.9 2.3
4RBS NDM-1a (B1) 2.4 meropenem (EP) To be published (Kim, Y. et al) A 4.0 - - - 2.0 3.3 3.0 2.1
B 4.0 2.2 3.0 3.1 2.1
5YPN NDM-1 (B1) b 2.12 meropenem (EI2) 328 A 4.1 - - - 2.0 2.6 3.0 2.0
B 4.3 - - - 2.2 2.9 2.7 2.0
5YPM NDM-1 (B1) b 2.15 meropenem (EI1) 328 A 4.2 - - - 2.1 3.2 2.6 2.0
B 4.2 - - - 2.1 3.0 2.4 2.0
C 4.2 - - - 2.1 3.1 2.5 1.9
D 4.2 - - - 2.0 3.2 2.3 2.0
E 4.2 - - - 2.2 3.1 2.4 2.0
F 4.3 - - - 2.1 3.2 2.4 2.0
G 4.2 - - - 2.3 2.8 2.3 1.9
H 3.9 - - - 2.3 3.0 2.6 2.0
Wat1-H118 Wat1-D120 Wat1-H196 Wat1-Zn2 Wat2-Zn2 C3O-Zn2 N4-Zn2
1X8I CphA (B2)a 1.9 biapenem (EP) 245 A 2.7 2.8 4.0 3.4 - 2.4 2.2