Fig. 3
From: Improved homology modeling of the human & rat EP4 prostanoid receptors
a Sequence alignment Squid Rhodopsin (PDB ID: 2ZIY) and hEP4. Structural annotations based on hEP4 model generated. RMSD alignment scores from RaptorX server used to score alignment within TM helical regions and colored from green (RMSD 0–2) to yellow (RMSD 3–4) to red (RMSD > 5). b Secondary structure stability by residue over time during 20 ns MD simulation