| BPTI | bovine pancreatic trypsin inhibitor |
| CDK1 | cyclin-dependent kinase 1 |
| CIA | cyanine-GCP conjugate |
| DPP I | dipeptidyl peptidase I |
| DPP II | dipeptidyl peptidase II |
| DPP III | dipeptidyl peptidase III |
| DPP IV | dipeptidyl peptidase IV |
| EDTA | ethylenediaminetetraacetic acid |
| GCP | guanidiniocarbonyl-pyrrole |
| HER | (R)-hydroxyethylene transition state mimetic of tynorphin |
| HB | hydrogen bond |
| HI | hydrophobic interaction |
| JMV-390 | N-[3-[(hydroxyamino) carbonyl]-1-oxo-2(R)-benzylpropyl]-L-leucine |
| MALDI | matrix-assisted laser desorption/ionization |
| MD | molecular dynamics |
| PCA | principal component analysis |
| PCMS | p-chloromercuriphenylsulfonate |
| PCMB | p-chloromercuribenzoic acid |
| pHMB | p-hydroxy-mercuribenzoate |
| QSAR | quantitative structure-activity relationship |
| SHE | (S)-hydroxyethylene transition state mimetic of tynorphin |
| TOF MS | time of flight mass spectrometry |