1PGR:
reference: Atomic structure of the GCSF-receptor complex showing a new cytokine-receptor recognition scheme., Aritomi M, Kunishima N, Okamoto T, Kuroki R, Ota Y, Morikawa K, Nature 1999 Oct 14;401(6754):713-7. PMID: 10537111

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