add EM example

src/viewer/index.html

@@ -612,6 +612,15 @@
                     id: 'ma-bak-cepc-0003',
                     url: 'https://www.modelarchive.org/doi/10.5452/ma-bak-cepc-0003.cif',
                     info: 'pLDDT coloring: Predicted interaction between Ribosome biogenesis protein ERB1 (Eukaryotic ribosome biogenesis protein 1) and Ribosome biogenesis protein BRX1'
+                },
+                {
+                    id: '7N5D',
+                    info: 'EM: Composite Structure of Mechanosensitive Ion Channel Flycatcher1 in GDN',
+                    config: {
+                        props: {
+                            kind: 'density'
+                        }
+                    }
                 }
             ];