2IPC:
reference: Crystal Structure of the Translocation ATPase SecA from Thermus thermophilus Reveals a Parallel, Head-to-Head Dimer., Vassylyev DG, Mori H, Vassylyeva MN, Tsukazaki T, Kimura Y, Tahirov TH, Ito K, J Mol Biol. 2006 Dec 1;364(3):248-258. Epub 2006 Sep 29. PMID: 17059823

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