Abstract：
:The interaction of two anthraquinone dyes, bromaminic acid 1-amino-4-bromo anthraquinone-2-sulphonic acid (BA) and 1-amino-4-(4'-aminophenylamino)-anthraquinone-2,3'-disulphonic acid (ASSO), with poly-L-lysine (PLL), poly-L-ornithine (PLO) and poly-L-arginine (PLA) has been studied. The flexibility of the side chain (chain length) and the geometry of the charge centre (tetrahedral/planar) of the polypeptide were found to affect the interaction. Further, both dyes induce ordered conformation (alpha or beta) for the three polypeptides, but the final conformation was found to depend on the polypeptide as well as the number of anionic sites on the ligand. While the bidentate ASSO-polypeptide complexes acquire beta-conformation, the monodentate BA distinguished between the three substrates and induces beta-conformation only for PLO.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Ratna MA,Atreyi M,Rao MVdoi
10.1016/s0141-8130(05)80028-5keywords:
subject
Has Abstractpub_date
1992-08-01 00:00:00pages
201-9issue
4eissn
0141-8130issn
1879-0003pii
S0141-8130(05)80028-5journal_volume
14pub_type
杂志文章abstract：:A water-soluble polysaccharide (PSRC) was extracted and purified from the roots of Radix Cyathulae officinalis Kuan, and its chemical characteristics, monosaccharide composition and antioxidant activities were characterized. The average of molecular weight (Mw) of PSRC was 182 kDa. The majority of monosaccharide compo...
journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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