Mosaic of the one-dimensional rest-frame VIMOS spectra of ten spectral members of Cl J0227-0421. The black line in each panel is the flux density spectrum, and the dashed magenta line is the formal uncertainty spectrum (see Le Fèvre et al. 2014, and references therein for details on the generation of the uncertainty spectrum). Important spectral features are marked. The spectrum of the proto-BCG, a type-1, and X-ray AGN host is shown in the 3rd panel from the top on the left. The spectra of the two other type-1 AGN hosts are shown in the top and 4th from the top panel on the left. The first four galaxies plotted in the left panel were observed as part of the VVDS-Deep sample and, as such, do not have observed spectra blueward of λ_rest~^<1290 Å. A wide range of diversity in spectral properties is seen among the protostructure members.