生物大分子波谱学原理 吴季辉 CBCA(CONH a CB Q31 CB V26 s CB V17 CBN6O◆ DCB V17 C CB L67 ●caG53 H R54 R54 惠 caN60 C L67 6 HN 68 CaV17● CaV17 HN Co Q31 品 E18 D32 caV26 HN 27 F2=118.6ppm F2=119.0ppm 9.0 8.0 9.0 8.0 F3(ppm) F3(ppm) FIGURE 7.41 CBCA(CO)NH spectrum of ubiquitin.Selected (adjacent) F(13C)-F3(HN)slices from a 600-MHz 3D CBCA(CO)NH spectrum of i5N/13C- labeled ubiquitin at F2(15N)chemical shifts of 118.6 ppm (a)and 119.0 ppm (b). The interresidue cross-peaks are labeled.CBCA(CO)NH 生物大分子波谱学原理 吴季辉