3HQV:
reference: Microfibrillar structure of type I collagen in situ., Orgel JP, Irving TC, Miller A, Wess TJ, Proc Natl Acad Sci U S A. 2006 Jun 13;103(24):9001-5. Epub 2006 Jun 2. PMID: 16751282

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).