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. Author manuscript; available in PMC: 2010 Feb 18.
Published in final edited form as: J Am Chem Soc. 2009 Feb 18;131(6):2338–2347. doi: 10.1021/ja808311s

Table 2.

Raman peak assignments for the major protein and acyl-enzyme bands in the tazobactam/SHV-1 difference spectra shown in Figure 2.

Vibration Frequency in H2O (cm−1) Frequency in D2O (cm−1)
Amide I β-sheet 1679 1678
v(C=NH+) of imine 1658 1641
vas(CO2) coupled to
v(O=C-C=C-NH-)
1629 1612 (sh)
v(O=C-C=C-NH-)
of trans-enamine
1596 1580
Artifact 1500 (br) -
vs(CO2) 1372 1378
triazolyl 1288 1291
-NH-deformation
of ligand and/or protein
1238 -
trans HC=CH wag 969 930