However, cdc13 -1 cells that also carry either the tlc1 Δ48 or yku80 -135i mutation are more temperature sensitive than cdc13 -1 cells, suggesting that capping is compromised further by reduced Est2p telomere binding in these backgrounds (Vega et al. 2007).
For a given TFBS, let X denote the number of predicted binding site nucleotides in the foreground sequence set, and B the number of predicted binding site nucleotides in the background set.
As the regulatory sequence adopted in the model contains both TFBSs from known CRMs and other potentially strong TFBSs from the accessible chromatin, it is an important test to verify how the CRM's binding sites operate in the background of the rest of the TFBSs.
By contrast, F207A was wild-type (WT -like in its ability to bind liposomes, WT -like40A/D144A showed sinnitscabilityeduced liposome binding close to the bindground liposomesbinding seen in a ΔC2 construct.
Background binding in the presence of 1 mM GRGDS peptide was subtracted to obtain specific binding.
These results suggest that there are lots of nonspecific and background binding in the highly ranked peaks.
Analysis of human Ep-CAM-negative CHO cells revealed background binding in the order of 10 sites/cell (data not shown), indicating that the MDA-MB-231 cell line can be considered as Ep-CAM negative.
To determine the specific nucleotide binding, the background [S] GTPγS detected in the absence of G protein was subtracted from each reaction and data expressed as percentage of the [S] GTPγS bound by His-Gαi3 in the absence of His-Daple-CT.
By doing so, individual subunits of a protein complex can be preserved instead of specifying numerous species names, each of which would reflect a different combination of subunit states and bindings (recall the scaffold protein example in the background).
This interpretation is consistent with the EMS studies that show the specific bent IHF· cos-DNA complex remains unperturbed in the gel in the background of nonspecific binding up to 1 μM IHF while continuous smears are observed with nonspecific duplex substrates.
