Higuchi, Shigesada published the artcileEffects of polyamines on the melting of poly(riboadenylic acid) plus poly(ribouridylic acid) complexes in a solution, SDS of cas: 10517-44-9, the publication is Bulletin of the Chemical Society of Japan (1966), 39(9), 1886-93, database is CAplus and MEDLINE.
The effects of polyamines on the melting of poly(riboadenylic acid) (I) and poly(ribouridylic acid) (II) were studied, where melting is defined as a transition in solution from the double (or triple) helical conformation into random coils. I was obtained com., and II was prepared from polynucleotide phosphorylase obtained from Azotobacter vinelandii; the organism was precipitated from cold EtOH, dissolved in water, deproteinized by CHCl3, dialyzed against an aqueous solution of 0.01M ethylene diamine tetraacetate, a M NaCl solution, and distilled water, and was then lyophilized. Ultracentrifugal sedimentation measurements and uv absorption determinations indicated that a 1:1 complex is formed between I and II. The absorbance was measured at 259 m¦Ì for several mixtures at 18¡ã in several concentrations of NaCl and Na citrate, NaCl, glycylglycine, and ethylenediamine solutions Absorbance observations indicated that a 1:2 complex of I:II was present in 0.1M NaCl + 0.01M glycylglycine buffer. The melting of the polymer mixtures was followed as dependent on the Na+ concentration in the solvent. Also, the melting was followed at 259 m¦Ì and 280 m¦Ì for the 1:1 mixture in 0.01M NaCl + 0.001 M Na citrate buffer. A mechanism is suggested for the phenomenon observed The effects of ethylenediamine dihydrochloride, 1,3-diaminopropane-2HCl, 1,4-diaminobutane-2HCl, 1,6-diaminohexane-2HCl, 1,8-diaminooctane-2HCl, and spermine-4HCl on the melting process were studied. Actinomycin D has no effect.
Bulletin of the Chemical Society of Japan published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, SDS of cas: 10517-44-9.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia