4K2B:
reference: The structure of NtdA, a sugar aminotransferase involved in the kanosamine biosynthetic pathway in Bacillus subtilis, reveals a new sub-class of aminotransferases., van Straaten KE, Ko JB, Jagdhane R, Anjum S, Palmer DR, Sanders DA, J Biol Chem. 2013 Oct 4. PMID: 24097983

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