DNA duplex stabilization in crowded polyanion solutions.

DNA duplex stabilization in crowded polyanion solutions.

Chemical communications (Cambridge, England) (2013-01-11)

Imran Khimji, Jeehae Shin, Juewen Liu

RESUMEN

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.

MATERIALES

Referencia del producto

Marca

Descripción del producto

181285

Sigma-Aldrich

Ácido poli(acrílico), average M_v ~450,000

323667

Sigma-Aldrich

Ácido poli(acrílico)

416002

Sigma-Aldrich

Poly(acrylic acid) solution, average M_w ~250,000, 35 wt. % in H₂O

523925

Sigma-Aldrich

Poly(acrylic acid) solution, average M_w ~100,000, 35 wt. % in H₂O

447013

Sigma-Aldrich

Poly(acrylic acid sodium salt), average M_w ~5,100 by GPC, powder

420344

Sigma-Aldrich

Poly(acrylic acid sodium salt), average M_w ~2,100

306215

Sigma-Aldrich

Ácido poli(acrílico), average M_v ~1,250,000

535931

Sigma-Aldrich

Poly(acrylic acid) solution, average M_w ~2,000, 50 wt. % in H₂O, electronic grade

416029

Sigma-Aldrich

Poly(acrylic acid, sodium salt) solution, average M_w ~8,000, 45 wt. % in H₂O

306231

Sigma-Aldrich

Ácido poli(acrílico), average M_v ~4,000,000

416010

Sigma-Aldrich

Poly(acrylic acid, sodium salt) solution, average M_w ~1,200, 45 wt. % in H₂O

306223

Sigma-Aldrich

Ácido poli(acrílico), average M_v ~3,000,000

181293

Supelco

Ácido poli(acrílico), analytical standard, average M_n 130,000 (Typical)

81123

Supelco

Poly(acrylic acid sodium salt), analytical standard, for GPC, 16,000