title: Potential for variability through multiple gene products of bacteriophage phiX174.
abstract: The small single-stranded DNA phages phiX174 and S13 produce multiple products of certain phage genes, as observed by electrophoresis on SDS-polyacrylamide slab gels. Two A protein products, two A products and four G products are observed. The multiple gene products may arise from multiple sites for initiation or termination of translation, or by protein modification. Some of the variant products may provide a substitute for heterozygosity without a concomitant increase in the size of the genome.
mesh_terms: D002874:Chromosome Mapping; D003062:Codon; D003090:Coliphages / Q000235:genetics*; D005796:Genes; D005814:Genes, Viral; D014644:Genetic Variation; D006579:Heterozygote; D008970:Molecular Weight; D010442:Peptide Chain Initiation, Translational; D010443:Peptide Chain Termination, Translational; D014764:Viral Proteins / Q000235:genetics*
chemical_list: D003062:Codon; D014764:Viral Proteins