Premium
Poly[d(Gm 5 C)·d(Gm 5 C)] can assume the Z′ form: A CD study
Author(s) -
Zhong Lingxiu,
Johnson W. Curtis
Publication year - 1990
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360300717
Subject(s) - chemistry , titration , ethanol , titration curve , decomposition , analytical chemistry (journal) , spectral line , metal , inorganic chemistry , crystallography , stereochemistry , chromatography , organic chemistry , physics , astronomy
Poly [d(Gm 5 C)·d(Gm 5 C)] can be titrated from the Z form in 30% ethanol to the Z′ form by adding either ethanol or divalents. Analysis by singular‐value decomposition of CD spectra recorded during the titration reveal that ethanol and transition metal induced changes are two state with a single‐step titration curve. When the change is induced by arkaline earth metals it is still two state, but in contrast the titration curve is complex, indicating two binding sites.