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  • Title: The collagenous protein with elastin crosslinks from Descemet's membrane is not related to type VIII collagen.
    Author: Davis PF, Ryan PA, Kittelberger R, Greenhill NS.
    Journal: Biochem Biophys Res Commun; 1990 Aug 31; 171(1):260-5. PubMed ID: 2393394.
    Abstract:
    A collagen-like insoluble protein containing the elastin cross-links (desmosine and isodesmosine) has been isolated from Descemet's membrane. Recently type VIII collagen (endothelial collagen) has been shown to be a major constituent of this membrane. Biochemical studies suggest that these two proteins are unrelated. The cyanogen bromide peptide maps show negligible similarity. Antiserum raised against oxalic acid digests of elastin (alpha-elastin) did not react against an oxalic acid digests of type VIII collagen but did show some reaction against the cross-linked preparation. Immunofluorescent localization has demonstrated the presence of type VIII collagen in trachea but a desmosine cross-linked collagen could not be isolated from this tissue.
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