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DNA duplex stabilization in crowded polyanion solutions.

Chemical communications (Cambridge, England) (2013-01-11)
Imran Khimji, Jeehae Shin, Juewen Liu
PMID23302897
ABSTRACT

The melting temperature of duplex DNA is much higher in polyanions than in non-ionic polymers with similar ionic strength, suggesting an additional electrostatic contribution on top of the excluded volume effect.

MATERIALS
Product Number
Brand
Product Description
416002
Sigma-Aldrich
Poly(acrylic acid) solution, average Mw ~250,000, 35 wt. % in H2O
416029
Sigma-Aldrich
Poly(acrylic acid, sodium salt) solution, average Mw ~8,000, 45 wt. % in H2O
416010
Sigma-Aldrich
Poly(acrylic acid, sodium salt) solution, average Mw ~1,200, 45 wt. % in H2O
416037
Sigma-Aldrich
Poly(acrylic acid, sodium salt) solution, average Mw ~15,000, 35 wt. % in H2O
535931
Sigma-Aldrich
Poly(acrylic acid) solution, average Mw ~2,000, 50 wt. % in H2O, electronic grade
523925
Sigma-Aldrich
Poly(acrylic acid) solution, average Mw ~100,000, 35 wt. % in H2O
81131
Supelco
Poly(acrylic acid sodium salt), analytical standard, for GPC, 83,000
181293
Supelco
Poly(acrylic acid), analytical standard, average Mn 130,000 (Typical)
420344
Sigma-Aldrich
Poly(acrylic acid sodium salt), average Mw ~2,100
306215
Sigma-Aldrich
Poly(acrylic acid), average Mv ~1,250,000
447013
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Poly(acrylic acid sodium salt), average Mw ~5,100 by GPC, powder
81117
Supelco
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81123
Supelco
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306231
Sigma-Aldrich
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181285
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323667
Sigma-Aldrich
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Sigma-Aldrich
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