NMR and x-ray studies of collagen model peptides

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The main structural component in collagen is the triple helix which is generally composed of the amino acid sequence repeat (X-Y-Gly)n with proline and hydroxyproline often present at poistions X and Y. Non-globular, fibrillar proteins like most collagens are difficult to work with from a structural perspective. An alternative approach to collagen structural elucidation is to study considerably shorter fragments of the triple helix. To date, various triple helical model peptides such as (Pro-Pro-Gly)n and (Pro-Hyp-Gly)n have been investigated by various physical and spectroscopic techniques. The advent of easy solid phase peptide synthetic methodology and the development of multi-dimensional heteronuclear and high field NMR technologies have promoted significant advances in the structure elucidation of a number of triple helix peptides. Here, the main focus is to review and to address the current state of knowledge in the field of NMR and x-ray analysis of triple helical model peptides.

Original languageEnglish (US)
Pages (from-to)359-370
Number of pages12
Issue number4
StatePublished - Dec 1 1996

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