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The extractability of squid skin proteoglycans with solutions of varying concentrations of guanidine-HCl, urea and SDS was studied; 4 M guanidine-HCl, being the best extractant, removed 95% of the tissue proteoglycans (glycosaminoglycan uronic acid). The proteoglycans in the 4 M guanidine-HCl extract were fractionated by repeated ion exchange and gel chromatography on Sepharose CL-4B to give three main populations, all being present in about equal proportions. Two populations (Kd 0.34 and 0.56) contained only chondroitin (proteochondroitin) and the other (Kd 0.50) only oversulphated chondroitin sulphate (oversulphated proteochondroitin sulphate). Two minor populations, one containing chondroitin and chondroitin sulphate and the other chondroitin sulphate and oversulphated chondroitin sulphate, were also identified.
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November 1972,
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N K Karamanos, and
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D H Vynios
March 1975,
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N K Karamanos, and
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Biochemistry and cell biology = Biochimie et biologie cellulaire,
N K Karamanos, and
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C A Antonopoulos, and
T Tsegenidis, and
C P Tsiganos, and
D H Vynios
January 1969,
Comparative biochemistry and physiology,
N K Karamanos, and
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C P Tsiganos, and
D H Vynios
February 1990,
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N K Karamanos, and
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T Tsegenidis, and
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N K Karamanos, and
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D H Vynios
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N K Karamanos, and
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T Tsegenidis, and
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D H Vynios
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N K Karamanos, and
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C A Antonopoulos, and
T Tsegenidis, and
C P Tsiganos, and
D H Vynios
December 1992,
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N K Karamanos, and
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D H Vynios
November 1964,
Biochimica et biophysica acta,
