2K1A:
reference: Structure of the Integrin {alpha}IIb Transmembrane Segment., Lau TL, Dua V, Ulmer TS, J Biol Chem. 2008 Jun 6;283(23):16162-8. Epub 2008 Apr 16. PMID: 18417472

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