4V2M:
reference: Crystallographic Studies Evidencing the High Energy Tolerance to Disrupting the Interface Disulfide Bond of Thioredoxin 1 from White Leg Shrimp Litopenaeus vannamei., Campos-Acevedo AA, Rudino-Pinera E, Molecules. 2014 Dec 15;19(12):21113-26. doi: 10.3390/molecules191221113. PMID: 25517346

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