RESUMEN

The proton NMR characterization of bombesin has been carried out at 500 MHz in DMSO-d6 using two-dimensional homo- and 1H-13C hetero-correlated techniques. All resonances in the NMR spectra have been assigned and several coupling constants have been measured. The backbone J alpha CH-NH coupling constants have constant values that vary between 7.8 and 8.2 Hz and indicate an unfolded structure in DMSO-d6. Discrepancies with data recently obtained at 300 MHz [(1987) Eur. J. Biochem. 168, 193-199] are discussed.

Asunto(s)

Bombesina , Secuencia de Aminoácidos , Bombesina/síntesis química , Deuterio , Dimetilsulfóxido , Espectroscopía de Resonancia Magnética/métodos , Conformación Proteica