An Unpublished Poem by George Wither

Pritchard, Allan

doi:10.1086/389597

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1975

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“…The sum from N + 1 to OJ is approximated by the integral from N to a, so that: @p,(y,3/2) = -2e-"y/N'/' -2(ry)"'erf ( ( y N )"'I + 2 ("2 -nI(-y)"/n! n =n (18) where (is the Riemann zeta function. Equations (18) and (19) may be substituted for the functions in Eq.…”

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confidence: 99%

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Helix–coil transitions of compositionally heterogeneous DNA

Pritchard

Eichinger

1975

Biopolymers

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SynopsisFragmented and mitomycin C cross-linked E. coli DNA was fractionated according to base composition by means of hydroxylapatite chromatography and density-gradient centrifugation in order to determine the effect of compositional heterogeneity on the breadth of the helix-coil transition. The transitions of some of the fractions are broader than that of the unfractionated DNA, due, presumably, to nonrandom sequences in molecules of 5 X lo5 daltons. Analysis of the transition breadths in terms of the known heterogeneity leads to reconsideration of current DNA helix-coil transition theory. We propose that partially denatured states include those for which the chains do not remain in strict register. Denaturation profiles are comprehensible only if this multitude of entropically favorable, degenerate states is included in the theory.

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Section: \ = mentioning

confidence: 99%

“…n =n (18) where (is the Riemann zeta function. Equations (18) and (19) may be substituted for the functions in Eq. (16), and the sum therein is approximated by the integral to yield:…”

Section: \ = mentioning

confidence: 99%

Helix–coil transitions of compositionally heterogeneous DNA

Pritchard

Eichinger

1975

Biopolymers

View full text Add to dashboard Cite

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An Unpublished Poem by George Wither

Cited by 1 publication

References 0 publications

Helix–coil transitions of compositionally heterogeneous DNA

Helix–coil transitions of compositionally heterogeneous DNA

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