2CSX:
reference: Structural basis for anticodon recognition by methionyl-tRNA synthetase., Nakanishi K, Ogiso Y, Nakama T, Fukai S, Nureki O, Nat Struct Mol Biol. 2005 Oct;12(10):931-2. Epub 2005 Sep 11. PMID: 16155581

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