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- W2003722208 abstract "Calcium binding and charge distribution on highly branched and linear sulfated l-galactans from ascidians have been studied using a metallochromic indicator and conductimetric titrations. The distance between charged groups of the linear and highly branched galactans does not vary despite their marked differences in sulfate/total sugar molar ratios. These results indicate that the sulfated l-galactose units are concentrated in the central polysaccharide core and not intercalated among non-sulfated units. This inference is consistent with the chemical studies of these galactans. Surprisingly, calcium affinity increases with increasing amounts of non-sulfated sugar branches in the molecule. Thus, calcium binding in these polymers is not a simple function of availability of anion binding sites but a more complex calcium–polysaccharide interaction." @default.
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- W2003722208 date "1998-01-01" @default.
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- W2003722208 title "Charge distribution and calcium affinity of sulfated α-l-galactans from ascidians. Comparison between linear and highly branched polymers" @default.
- W2003722208 doi "https://doi.org/10.1016/s0008-6215(97)10100-8" @default.
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