This protein contains a left-handed β-helix with 3 faces made up of parallel β-strands. ( Jmol does not recognize most of the strands as β-sheet.) A reverse loop makes one set of strands anti-parallel.
Graether, S. P., Kuiper, M. J., Gagne, S. M., Walker, V. K., Jia, Z., Sykes, B. D., Davies, P. L.: Beta-Helix Structure and Ice-Binding Properties of a Hyperactive Antifreeze Protein from an Insect. Nature 406 pp. 325 (2000)
(PubMed)