Anomalous cysteine in type I collagen. Localisation by chemical cleavage of the protein using 2-nitro-5-thiocyanobenzoic acid and by mismatch analysis of cDNA heteroduplexes.


A method is presented for the localisation of an anomalous cysteine inside the triple helical domain of type I collagen from a patient affected with Osteogenesis Imperfecta. The chemical cleavage used relies on the specificity and reactivity of the thiol side chain versus 2-nitro-5-thiocyanobenzoic acid, to yield cyanocysteine; in mild alkaline conditions… (More)


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