Hill plot


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Hill plot

(hil),
a graphic representation of enzyme kinetic data or of binding phenomena to assess the degree of cooperativity of a system; the vertical axis in a Hill plot is log [Y/(1 - Y)], in which Y is the degree of saturation (for enzymes, the vertical axis is log [v/(Vmax - v)], where v is the initial velocity and Vmax is the maximum velocity, and the horizontal axis is the logarithm of the ligand concentration.
[Archibald V. Hill]

Hill,

Archibald V., English biophysicist and Nobel laureate, 1886-1977.
Hill equation - used to express the fractional saturation of a molecule with a ligand as a function of ligand concentration.
Hill plot - a graphical representation of enzyme kinetic data or of binding phenomena to assess the degree of cooperativity of a system.
References in periodicals archive ?
Figure 10 shows the Hill plot corresponding to PCS loss index with a 95 percent confidence interval.
Although the Hill plot is linear well below 58% oxygen saturation, the error in calculated [P.sub.50] increases rapidly below this point primarily because of the propagation of error in measured P[O.sub.2].
To answer this question in the present study, we looked at the correlation between spikelet severity in injected spikes and FDK in a sample of grain from auxiliary, noninjected spikes in the same hill plot. The strength of this design is that it allowed us to assess the value of the injection method in the field within the same experimental unit, thus eliminating noise caused by plot-to-plot environmental variation.
The 63 S0:1 full-sib families were evaluated in replicated hill plot field experiments grown at one or two locations.
To provide a pool of pods at the same stage of development, a minimum of 20 3-seeded pods per hill plot (at two pods per plant) were marked with acrylic paint (Egli, 1999), at the beginning seedfill stage (BS, pods were dark green, seeds were green and just starting to swell with a 3-4 mm diam.).
Cycle and check means for oil content, grain yield, groat fraction, and oil yield for oat lines representing nine cycles of recurrent selection evaluated in hill plot experiments in three Iowa locations in 1992.
Subsequently, 100 spikes selected from the [F.sub.3] were threshed individually and sown as [F.sub.3:4] hill plots in the FHB nursery at Prosper, ND, in the summer of 1998.
The experiment was planted on 5 June 1995 in hill plots with 12 seeds per plot.
The [F.sub.4] generation was evaluated for maturity, height, and disease resistance as 30 hill plots, each containing grain from a single [F.sub.3] spike.
Competition among oat varieties grown in hill plots. Crop Sci.
A balanced composite of 46 [S.sub.1] seeds from each half-sib family used in the second intermating were planted in hill plots spaced 1.0 m apart in all directions, and alternated with hill plots containing [S.sub.0] seed from the second intermating.