abstract |
Formulas (X), (I), (II), (V), (VI), (VII) and (VIII) (wherein a, b, d, X, Y, useful for bioconjugate reaction processes) Z, FG, R, R 1 , R 2 and R 3 are as defined in the claims) and pyrrolicine analogs and mutant proteins comprising them are provided. [Chemical 1] |