Scanning tunneling microscopy of a wheat seed storage protein reveals details of an unusual supersecondary structure
- PMID: 11607142
- PMCID: PMC50749
- DOI: 10.1073/pnas.88.1.68
Scanning tunneling microscopy of a wheat seed storage protein reveals details of an unusual supersecondary structure
Abstract
Scanning tunneling microscopy has been used to demonstrate that a spiral structure based on beta-reverse turns is adopted by the repeat sequences present in a group of wheat gluten proteins. This structure is similar to the beta-spiral formed by a synthetic polypentapeptide based on a repeat sequence present in elastin. Wheat gluten and elastin are both elastomeric and it is possible that the spiral structure contributes to this property.
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