Abstract
PRECIPITATION of collagen from solution in the presence of chondroitin sulphates (or certain other glycosaminoglycans), followed by dialysis against water, leads to the formation of the fibrous long spacing (FLS) polymorphic form of collagen. Electron microscopy shows this to consist of banded fibrils with a periodicity in the range 1200–2400 Å and a symmetric intraperiod structure, in contrast to the 600–700 Å periodicity and polarized fine structure characteristic of native collagen fibrils. FLS was originally reported by Highberger et al.1–3 and has been observed in three principal modifications, FLS I, FLS II and FLS III, differing in periodicity and arrangement of dense bands4–6. This letter reports a new form of FLS, denoted FLS IV.
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References
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ARMITAGE, P., CHAPMAN, J. New Fibrous Long Spacing Form of Collagen. Nature New Biology 229, 151–152 (1971). https://doi.org/10.1038/newbio229151a0
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DOI: https://doi.org/10.1038/newbio229151a0