HIV Envelope Protein gp120HIV Envelope Protein gp160HIV Envelope Protein gp41HIV-1Antigens, CD4Viral Envelope Proteinsenv Gene Products, Human Immunodeficiency VirusGene Products, envMolecular Sequence DataReceptors, CXCR4HIV AntibodiesAmino Acid SequenceInterleukin-1 Receptor Accessory ProteinAIDS VaccinesEpitopesHIV InfectionsHIVViral Regulatory and Accessory ProteinsNuclear EnvelopeRecombinant ProteinsCell LineCells, CulturedVirionHIV AntigensProtein BindingAntibodies, NeutralizingAccessory NerveVirus InternalizationVirus ReplicationNeutralization TestsViral ProteinsReceptors, CCR5Receptor, Melanocortin, Type 2Membrane FusionHIV SeropositivityProtein PrecursorsHIV Fusion InhibitorsBacteriophage T4Base SequenceAcquired Immunodeficiency SyndromeModels, MolecularGlycosylationReceptors, HIVAntibodies, MonoclonalMembrane GlycoproteinsHeLa CellsProtein ConformationCell FusionMembrane ProteinsRecombinant Fusion ProteinsUreaseBinding SitesRetroviridae Proteins, OncogenicMutationPeptide FragmentsVirus AssemblyHIV-2PeptidesProtein Structure, TertiaryHuman Immunodeficiency Virus Proteinsvpr Gene Products, Human Immunodeficiency VirusCD4-Positive T-LymphocytesT-LymphocytesAntibodies, ViralGene Products, vprCell MembraneDNA, ViralBacterial ProteinsReceptors, VirusCercopithecus aethiopsAnti-HIV AgentsEscherichia coliEnzyme-Linked Immunosorbent Assay