Star formation rate as a function of M₅₀₀ at z ∼ 4.3. The blue square and green line are the observed values of Miller et al. (2018) and Oteo et al. (2018) protoclusters respectively. Black symbols refer to the SFR computed in a cylinder 1 pMpc long and within a circular aperture of 130 pkpc in our simulations. The five most massive groups of each region are shown. We used black circles for groups which end up in the central cluster of the region at z = 0, and black triangles otherwise.