Words similar to lbd
Example sentences for: lbd
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The NR family contains two related ERs (ERα and ERβ) that conform to the typical three domain NR structure and share extensive sequence homology in the DBD and LBD region [ 20 21 ] . Analysis of the function of the individual ERs in mouse knockout models suggests that the major proliferative effects of estrogen are mediated by ERα and not by ERβ, which seems to play an inhibitory role in proliferation in some studies [ 22 23 ] . The ligand-binding properties of the ERs are different, with ERβ often exhibiting stronger binding to plant-derived phytoestrogens [ 24 ] . More importantly, the ERs exhibit isoform-specific effects on gene expression.
The LBD utilizes a large hydrophobic cleft composed of residues along H3 and H5 to bind IDs [ 17 ] , and a smaller hydrophobic cleft that is composed of residues in the upper part of H3 and H5 and H12 (and corresponds to AF-2) to bind NR boxes [ 18 ] . Thus, agonists promote coregulator exchange by promoting the packing of H12 over the lower part of the ID binding region, an event that simultaneously completes the coactivator binding surface.
Although the poorly conserved NTD region clearly plays an important role in isoform-specificity [ 32 33 ] , it is also likely that there are differences in the better conserved LBD region that contribute to differential ERα and ERβ activities.
Control two-hybrid assays confirmed that a VP16-TRβ LBD fusion protein bound N-CoR in the absence of hormone, but not in the presence of T3.
NRs consist of three domains, the N-terminal domain (which contains a context-specific activation function AF-1), the central DNA binding domain (DBD) and the C-terminal ligand binding domain (LBD), which contains a hormone-dependent activation function, AF-2.
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