5XCU:
reference: Fv-clasp: An Artificially Designed Small Antibody Fragment with Improved Production Compatibility, Stability, and Crystallizability., Arimori T, Kitago Y, Umitsu M, Fujii Y, Asaki R, Tamura-Kawakami K, Takagi J, Structure. 2017 Sep 6. pii: S0969-2126(17)30264-2. doi:, 10.1016/j.str.2017.08.011. PMID: 28919443

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