We conclude that the unstable H3mm7 nucleosome may be required for proper skeletal muscle differentiation.
About 13 years ago, the pneumococcal CWH DacA (PBP3), which carries a D,D-carboxypeptidase activity, was shown to be required for proper orientation of FtsZ and PBP annular structures at midcell16.
Alternatively or additionally the oligomeric form of IDE might be required for proper activator binding.
However, phosphorylation did not appear to be required for proper LYL1 degradation by the proteasome.
The axon guidance molecule EphB1 has also been shown to be required for proper ipsilateral projection of these RGCs [47].
The signal peptide and transmembrane regions were preserved in all constructs, since they are known to be required for proper membrane localization of type I transmembrane proteins.
It is important to note that this deletion removes multiple transcription factor binding sites, including the FUSE binding element known to be required for proper MYC expression [16].
RNase activity of Dis3, a core subunit of exosome, was found to be required for proper kinetochore formation and establishment of kinetochore-microtubule interactions.
Alternatively, Vpr binding to DCAF1 might be required for proper docking of Vpr at the NE, where it could then exert its cytostatic activity by means of local interactions.
Instead, HP1gamma could be implicated in proper kinetochore function through interaction with Mis12 [51], or it could be required for proper accumulation of Aurora B at centromeres (Figure 6, [53], [54]).
The N-terminus of pro-amphiregulin has been documented to be required for proper folding and export from the cell since deleted N-terminal pro-region completely abolished the release of amphiregulin [30].
