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. Author manuscript; available in PMC: 2006 Apr 13.
Published in final edited form as: J Phys Chem B. 1999 Jan 28;103(4):737–745. doi: 10.1021/jp9833193

TABLE 1.

Measured Arrhenius Activation Parameters for the Dissociation of Singly Protonated Leucine Enkephalina and Doubly Protonated Bradykininb

peptide activation energy (eV) log(A)
bradykinin 2+ 0.84 8.0
leucine enkephalin 1+ (overall) 1.09 10.5
ii(M-H2O)+ 0.99 8.7
ib4 1.11 10.7
a

From ref 41.

b

From ref 43.