| 2XWO: Siap R147e Mutant In Complex With Sialylamide reference: Tripartite ATP-independent periplasmic (TRAP) transporters use an arginine-mediated selectivity filter for high affinity substrate binding., Fischer M, Hopkins AP, Severi E, Hawkhead J, Bawdon D, Watts AG, Hubbard RE, Thomas GH, J Biol Chem. 2015 Sep 5. pii: jbc.M115.656603. PMID: 26342690 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).