* 1.G.1 The Viral Pore-forming Membrane Fusion Protein-1 (VMFP1) Family
* 1.G.2 The Viral Pore-forming Membrane Fusion Protein-2 (VMFP2) Family
* 1.G.3 The Viral Pore-forming Membrane Fusion Protein-3 (VMFP3) Family
* 1.G.4 The Viral Pore-forming Membrane Fusion Protein-4 (VMFP4) Family
* 1.G.5 The Viral Pore-forming Membrane Fusion Protein-5 (VMFP5) Family
* 1.G.6 The Hepadnaviral S Fusion Protein (HBV-S Protein) Family
* 1.G.7 The Reovirus FAST Fusion Protein (R-FAST) Family
* 1.G.8 The Arenavirus Fusion Protein (AV-FP) Family
* 1.G.9 The Syncytin (Syncytin) Family
* 1.G.10 The Herpes Simplex Virus Membrane Fusion Complex (HSV-MFC) Family
* 1.G.11 Poxvirus Cell Entry Protein Complex (PEP-C) Family
* 1.G.12 The Avian Leukosis Virus gp95 Fusion Protein (ALV-gp95) Family
* 1.G.13 The Orthoreovirus Fusion-associated Small Transmembrane (FAST) Family
* 1.G.14 The Influenza Virus Hemagglutinin/Fusion Pore-forming Protein (Influenza-H/FPP) Family
* 1.G.15 The Autographa californica Nuclear Polyhedrosis Virus Major Envelope Glycoprotein GP64 (GP64) Family
* 1.G.16 The Human Immunodeficiency Virus Type 1 (HIV-1) Fusion Peptide (HIV-FP) Family
* 1.G.17 The Bovine Leukemia Virus Envelop Glycoprotein (BLV-Env) Family
* 1.G.18 The SARS-CoV Fusion Peptide in the Spike Glycoprotein Precursor (SARS-FP) Family
* 1.G.19 The Rotavirus Pore-forming Membrane Fusion Complex (Rotavirus MFC) Family
* 1.G.20 The Hantavirus Gc Envelope Fusion Glycoprotein (Gc-EFG) Family
* 1.G.21 The Epstein Barr Virus (Human Herpes Virus 4) Gp42 (Gp42) Family
* 1.G.22 The Cytomegalovirus (Human Herpesvirus 5) Glycoprotein gO (gO) Family