Known differences in the binding pockets of N1 and N2 could be a possible reason for this difference in binding at lower concentrations in addition to the number of NAs present on the surface of each strain.
Also, the dissociation constant measured by tryptophan quenching (680 ± 130 μM) (Table 3 ) was comparable to the value presented in Figure 6 A. The amplitudes of the stopped-flow transients also did not appear to saturate until ≈2 mM 2-OG, which would indicate incomplete binding at lower concentrations, consistent with 2-OG binding weakly to vCPH.
To explore this discrepancy further, DNA binding was measured at lower concentrations of alkylanilines using human S9.
However, this binding was gradually decreased at lower concentrations of ziv-aflibercept.
This difference in binding was more pronounced at lower concentrations of ALM, where 6.5 and 9.7 times as many BT-474 cells, as compared with MVM2 (ErbB2'+'/ErbB3'−') cells, were bound by ALM at 1 n M and 100 p M, respectively.
Dimerization increases the affinity of N-WASP for Arp2/3 complex 180-fold, allowing it to saturate both NPF binding sites on the complex at lower concentrations than monomeric VCA (Padrick et al., 2008).
Interestingly, GFP-H3-tNTS DNA binding ability appeared to alter bands whilst at lower concentrations of protein, indicating a higher binding to DNA.
These data demonstrate that the NtA is sufficient for synergy, but that the actin filament binding repeats allow cortactin to synergize at lower concentrations.
Because dATP at high concentrations inhibits RNR activity by binding to the allosteric activity site, whereas at lower concentrations it is a specificity effector, we first carried out control experiments to determine activity levels for CDP reduction in the absence of dATP and at an inhibitory dATP concentration (175 μM).
IG3 binding to ECM components was also observed pre-coating the wells at lower concentrations (10 μg/ml), showing a significant concentration-dependent binding of IG3 to laminin, fibronectin, and collagen type I (data not shown).
In contrast, the enzyme aminoglycoside 3'-phosphotransferase VIII achieves high-affinity phosphorylation of paromomycin, and, as an enzyme, it works at lower concentrations than a simple binding protein.
