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Figure 4
Top: schematic (not to scale) of the collagen staggered structure. Bottom: linearized projection of the 3D triple-helix collagen residues, with the lysine/hy­droxy­lysine (orange bullets) and arginine (green bullets) amino acid positions shown as a function of the fractional dM-period coordinate.

IUCrJ
Volume 8| Part 6| November 2021| Pages 1024-1034
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521010344