title: Protein and DNA-sequence homologies between the V3-loop of human immunodeficiency virus type I envelope protein gp120 and immunoglobulin variable regions.
abstract: We found that a common amino acid sequence motif exists between the V3-loop region of the human immunodeficiency virus type I envelope protein HIV gp120 and the human immunoglobulin heavy chain variable regions of subclass III (Ig VH-III). In the Ig VH-III sequences, the common motif overlaps with framework-1, complementarity-determining-region-1 and framework-2. In the homologous regions, the two groups of sequences also have a similar distribution of residue variability. On the DNA sequence level, the homology includes the conserved rearrangement signals of the VH-III genes, which lends support to the speculation that the V3 region of gp120 also may be involved in rearrangement processes.
authors.affiliation: Boris Kidric Institute, Beograd, Yugoslavia.
authors.forename: R
authors.initials: R
authors.lastname: Metlas
authors.forename: V
authors.initials: V
authors.lastname: Veljkovic
authors.forename: R D
authors.initials: RD
authors.lastname: Paladini
authors.forename: S
authors.initials: S
authors.lastname: Pongor
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D016384:Consensus Sequence; D004279:DNA, Viral / Q000235:genetics*; D005803:Genes, Immunoglobulin / Q000235:genetics*; D014644:Genetic Variation; D015699:HIV Envelope Protein gp120 / Q000235:genetics*; D015497:HIV-1 / Q000235:genetics*; D008969:Molecular Sequence Data; D016415:Sequence Alignment; D012689:Sequence Homology, Nucleic Acid
chemical_list: D004279:DNA, Viral; D015699:HIV Envelope Protein gp120