4MLR:
reference: Tyrosine 110 plays a critical role in regulating the allosteric inhibition of Campylobacter jejuni dihydrodipicolinate synthase by lysine., Conly CJ, Skovpen YV, Li S, Palmer DR, Sanders DA, Biochemistry. 2014 Dec 2;53(47):7396-406. doi: 10.1021/bi5012157. Epub 2014 Nov, 18. PMID: 25369463

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