HIV Envelope Protein gp120HIV Envelope Protein gp160HIV Envelope Protein gp41HIV-1Antigens, CD4Viral Envelope Proteinsenv Gene Products, Human Immunodeficiency VirusGene Products, envHIV InfectionsReceptors, CXCR4HIV AntibodiesMolecular Sequence DataAmino Acid SequenceAIDS VaccinesEpitopesHIVNuclear EnvelopeHIV SeropositivityRecombinant ProteinsCells, CulturedHIV AntigensCell LineAntibodies, NeutralizingVirionVirus InternalizationNeutralization TestsReceptors, CCR5Receptors, HIVHIV Fusion InhibitorsMembrane FusionVirus ReplicationProtein PrecursorsGlycosylationAntibodies, MonoclonalCell FusionAcquired Immunodeficiency SyndromeHIV SeroprevalenceProtein BindingHIV SeronegativityMembrane GlycoproteinsRetroviridae Proteins, OncogenicAnti-HIV AgentsViral ProteinsPeptide FragmentsCD4-Positive T-LymphocytesCytokine Receptor gp130Protein ConformationModels, MolecularBacteriophage T4PeptidesAntibodies, ViralHIV-2Virus AssemblyHeLa CellsBase SequenceRecombinant Fusion Proteinsgp100 Melanoma AntigenReceptors, VirusEnzyme-Linked Immunosorbent AssayGlycoproteinsMembrane ProteinsBinding Sites