Structure of the Hypothetical Protein Ton1535 from Thermococcus Onnurineus Na1 Reveals Unique Structural Properties by a Left-Handed Helical Turn in Normal Alpha-Solenoid Protein.
Jeong, J., Kim, Y., Rojvirija, C., Cha, H.J., Kim, Y., Ha, S.C.(2014) Proteins 82: 1072
- PubMed: 24265202
- DOI: https://doi.org/10.1002/prot.24444
- Primary Citation of Related Structures:
3ZPJ - PubMed Abstract:
The crystal structure of Ton1535, a hypothetical protein from Thermococcus onnurineus NA1, was determined at 2.3 Å resolution. With two antiparallel α-helices in a helix-turn-helix motif as a repeating unit, Ton1535 consists of right-handed coiled N- and C-terminal regions that are stacked together using helix bundles containing a left-handed helical turn. One left-handed helical turn in the right-handed coiled structure produces two unique structural properties. One is the presence of separated concave grooves rather than one continuous concave groove, and the other is the contribution of α-helices on the convex surfaces of the N-terminal region to the extended surface of the concave groove of the C-terminal region and vice versa.
Organizational Affiliation:
Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, Kyungbuk, 790-784, Republic of Korea.