Both described mechanisms might help in the activation of the Pepc promoter in maize, particularly as transcription is not activated from the minimum level, but from an intermediate state.
We therefore postulate that the down-regulation of these miRNA after birth may help coordinate the activation of negative regulators of growth thereby limiting cardiomyocyte size and possibly heart size relative to body size.
Limited autophagy in response to nutrient starvation has been shown to provide a survival function, and specific removal of damaged mitochondria by autophagy can also help prevent the activation of apoptotic pathways (Zhang et al, 2008).
Results Functional imaging techniques have helped highlight the activation of a large network during motor imagery tasks, including fronto-parietal, subcortical, and cerebellar regions, as well as cortical areas involved in motor control.
CD4 is an important accessory and costimulatory molecule that augments the signal received by the TCR complex and helps in the activation of the T cells 45. Blockade of this interaction using anti-CD4 antibodies increases the threshold of activation through the TCR, so that, under these conditions, only cells with high affinity have the capacity to be activated and proliferate 46.
Her actions during Halo: Combat Evolved help prevent the activation of Installation 04.
In autoimmune diseases, B-lymphocytes are thought to play a pathogenic role as antigen-presenting cells and may provide help in the activation of T-lymphocytes that are the mediators of autoimmune destruction (6).
For pilus assembly, the incoming chaperone-subunit complex also contains intermolecular cues that help to trigger the activation of the usher protein (Munera et al., 2008).
Site-specific PTM of these sliding clamps helps to coordinate the activation of specific pathways.
The work of Choi et al. suggests that the complex formed between agrin, amyloid precursor protein and LRP4 helps to focus the activation of MuSK, and thus the clustering of acetylcholine receptors, to the site of the developing neuromuscular junction.
