Article
ESI-MS/MS Identification of a Bradykinin-Potentiating Peptide from Amazon Bothrops atrox Snake Venom Using a Hybrid Qq-oaTOF Mass Spectrometer
Registro en:
COUTINHO-NETO, Antonio et al. ESI-MS/MS Identification of a Bradykinin-Potentiating Peptide from Amazon Bothrops atrox Snake Venom Using a Hybrid Qq-oaTOF Mass Spectrometer. Toxins, v. 5, p. 327-335, 2013.
10.3390/toxins5020327
Autor
Coutinho-Neto, Antonio
Caldeira, Cleópatra A. S.
Souza, Gustavo H. M. F.
Zaqueo, Kayena D.
Kayano, Anderson M.
Silva, Rodrigo S.
Zuliani, Juliana P.
Soares, Andreimar M.
Stábeli, Rodrigo G.
Calderon, Leonardo A.
Resumen
A bradykinin-potentiating peptide (BPP) from Amazon Bothrops atrox venom with m/z 1384.7386 was identified and characterized by collision induced dissociation (CID) using an ESI-MS/MS spectra obtained in positive ion mode on a hybrid Qq-oaTOF mass spectrometer, Xevo G2 QTof MS (Waters, Manchester, UK). De novo peptide sequence analysis of the CID fragmentation spectra showed the amino acid sequence ZKWPRPGPEIPP, with a pyroglutamic acid and theoretical monoisotopic m/z 1384.7378, which is similar to experimental data, showing a mass accuracy of 0.6 ppm. The peptide is homologous to other BPP from Bothrops moojeni and was named as BPP-BAX12.